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Alpine Type-S (S-W12D4) 12" Subwoofer with Ported Box and speaker wire

1500W Peak 12" Type-S Series Dual 4-ohm High Performance Subwoofer + Ported Car Subwoofer Box Enclosure with Custom Black Baffle Package

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List price $289.98

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$149.99

with warranty

+ FREE Shipping in US 48

Order within 11 hrs 36 mins to ship 12/11

Arrives by Wednesday, Dec. 12 to zip 20147

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Alpine S-W12D4

1800W Max (600W RMS) 12" Type-S Series Dual 4 Ohm Car Subwoofer
Quantity: 1

General Features:

  • 12" 4 Ohm Type-S Series Subwoofer
  • Power Handling:
    • Peak: 1800 watts
    • RMS: 600 watts
  • Recommended power range: 250- 600W RMS
  • Pulp/Kevlar Cone
  • High Amplitude Multi-Roll (HAMR) Surround
  • Progressive Spider with Reinforced Layer Tinsel Leads
  • Airflow Optimized Dual Flare Pole Vent
  • High Strength Steel Frame Basket
  • 8 AWG Push Terminals with VC Configuration Jumpers
  • Dual Voice Coil
  • High Grade Strontium Ferrite Magnets
  • Top-mount depth: 5-1/16"
  • Cutout diameter: 10-9"
  • Frequency Response: 26- 200Hz
  • Sensitivity: 86.4dB
  • Resonance Frequency (Fs): 31 Hz
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

  • Priced Individually

Single 12" Vented MDF Subwoofer Enclosure (Belva 1SV12B)

12-inch Vented Car Sub Box Made with 3/4" MDF and lined w/ Polyfil (1.8 cu ft airspace 1SV12B)
Quantity: 1

Belva Subwoofer Boxes with Polyfill and 3/4-inch MDF

Built for Bass

You've got an awesome subwoofer there, pal. But where's it gonna go? You can't just throw that thing in the trunk and call it a day. Don't worry, Belva's got your back. With superior construction, great features and everything you need for bass, you'll be ready to pass up that entry-level box you've been eyeballing.

Belva Subwoofer Boxes are CARB Phase 2 Compliant

You get quality boxes with solid 3/4" MDF because nothing else will do the job right. You want to flex your windshield, not your box's innards. You get polyfill built into the box, making sure your subs perform perfectly. On top of that, you get a box that's CARB Phase 2 Compliant, meaning your box won't emit as much nasty formaldehyde as the competition. Better for your bass and better for you.

Belva MDF 3/4-inch Thickness

Look, nobody buys a subwoofer and says, 'Aw man, I just want a teeny bit of thump.' Naw man, you want something that kicks you in the chest, but you need a box that's gonna put up with it. That's where Belva comes in. While other brands use less-than-optimal 1/2-inch MDF, we've got 3/4-inch MDF to make sure you get all the bass you can handle. Why risk a busted box? Belva's the obvious choice when it comes to giving your sub a good home and giving you the low end you're looking for.

Belva MDF 3/4-inch Thickness

  • Single 12" Vented MDF Enclosure
  • Holds one 12" subwoofer
  • 3/4 MDF (Medium Density Fiberboard) Construction
  • Durable black carpeting
  • Gold Terminals
  • Tuning Frequency: 36Hz
  • Internal Box Volume: 1.8 cubic ft.
  • Dimensions: 13-5/8"H x 17"D x 19-1/4"W
  • 30 Day return policy

TruConnex TC4SW16-25 by Metra

25' 16 Gauge CCA TC4 Series Speaker Wire
Quantity: 1

General Features:

  • 25 ft. of 16 Gauge Speaker Cable
  • High quality copper clad aluminum construction
  • Color: Silver
  • Length: 25 ft.
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
Type-S (Alpine)
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
12"
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
1500 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
500 watts
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Dual
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
4 ohms
Voice Coil Diameter
Diameter of voice coil, usually measured in inches.
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
26 - 200 Hz
Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
 
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
86.5 dB
Xmax (millimeters)
Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
15 mm
Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Round / Circle
Main Cone Color
This is the color of the speaker's or subwoofer's cone.
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Kevlar Reinforced Pulp Paper
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Santoprene Rubber
Magnet Structure
Defines the overall structure of the subwoofers magnet.
Subwoofer Grille
Most subwoofers are able to accommodate a universal grille; however, some subs include a grille and others have a specific, optional grille available for purchase separately. If "yes", then the subwoofer includes a grille. If "optional (sold separately)" the matching grille will need to be purchased in addition to the sub.
Re-Cone Kit Available
Some higher end subwoofers have replaceable cone assemblies. In case of a blown woofer, a recone kit allows for a simple replacement, as opposed to purchasing an entire new subwoofer.

Recommended Enclosure Specifications

Recommended Enclosure Type
This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Minimum Sealed Box Volume
This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Optimum Sealed Box Volume
This value indicates the ideal sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Maximum Sealed Box Volume
This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Minimum Ported Box Volume
This value indicates the minimum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Optimum Ported Box Volume
This value indicates the ideal ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Maximum Ported Box Volume
This value indicates the maximum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
Cutout Diameter
The actual diameter of the hole you will need to cut out if you are creating a new mounting location for this speaker, or if you are mounting a subwoofer in a box.
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

Electromechanical Parameters

Free-Air Resonance (Fs)
The free-air resonance frequency of the subwoofer, measured in Hz. At this frequency the weight of the moving parts is perfectly balanced with the subwoofers suspension system.
Equivalent Compliance (Vas)
This is the amount of air that has the same stiffness as the subwoofers suspension. The greater the rating, the lower the stiffness and larger recommended enclosure. It is measured in Liters.
Total Speaker Q Value (Qts)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including all dimensionless losses. Essentially, a high Qts value (closer to 1.0) means the subwoofer is great for sealed enclosures and a low Qts value (closer to 0) means the woofer is great in vented enclosures. A Qts of around 0.45 means the woofer will work decently in either enclosure type.
Electrical Q Value (Qes)
The subwoofers relative damping (Q) at the resonance frequency (Fs), including electrical losses. Also called the mechanical damping of the subwoofer. The unitless measurement usually varies from 0.5 – 10.
Electrical Resistance of Voice Coil (Re)
Amount of DC resistance of the subwoofer when measured with an ohm meter. Typically, this will read less than the impedance rating of the subwoofer.
Mechanical Q Value (Qms)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including mechanical losses. Also called the mechanical damping of the subwoofer. This unitless measurement usually varies from 0.5 – 10.
Efficiency Bandwidth Product (EBP)
This number represents the trade off between having an efficient woofer and one with a wide bandwidth. To calculate this number, take the Fs and divide it by the Qes. If the number is below 50, the woofer is designed for a sealed enclosure only. If it's between 50-100 it can be used in either. Lastly, if it's greater than 100 it's designed for vented enclosures.

What is in the box?

WITB: Subwoofers
A detailed list of the equipment (main product and accessories) included with your subwoofer. If special accessories are included in the box, they will be listed and detailed below the main list of equipment.
Paperwork
Paperwork included with the product.
Other Accessory #1
Standard accessories are included in the main list above; however, this line provides specific details on an additional, unique accessory that is included with the product.
Other Accessory #2
Standard accessories are included in the list above special accessories; however, this line provides specific details on an additional, unique accessory that is included with the product.
Other Accessory #3
Standard accessories are included in the list above special accessories; however, this line provides specific details on an additional, unique accessory that is included with the product.
Other Accessory #4
Standard accessories are included in the list above special accessories; however, this line provides specific details on an additional, unique accessory that is included with the product.
Other Accessory #5
Standard accessories are included in the list above special accessories; however, this line provides specific details on an additional, unique accessory that is included with the product.

Authorized Dealer

Authorized Dealer
We're an Authorized Dealer for nearly all the brands and manufacturers we sell. In the rare occasion we are not authorized, we guarantee that the product comes from an Authorized dealer or distributor. As such, we will always assist you even past the return policy to assure you the entire manufacturer warranty is covered in the event you have encounter a manufacturer defect.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
100%
4 Star
0%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.8
Value
4.9
Features
4.8
Design
4.8
Usability
4.9

Xenia, OH

Overall
Durability
Value
Features
Design
Usability
good

October 29, 2014

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Pretty well made box. The sub hole was a little too small for my 12" hcca but a little cutting solved that. I didn't have time to make my own box so this suited me realyl well.

77 of 92 found this helpful

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Hendersonville, NC

Overall
Durability
Value
Features
Design
Usability
good product

May 28, 2014

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Sound really good and looks good. Made fairly good. Would for sure recommend

76 of 91 found this helpful

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Las Vegas, NV

Overall
Durability
Value
Features
Design
Usability
well built box

December 19, 2013

The following review is for 1SV12B, which is a part of the bundle you are viewing.

For the price it cannot be beat. This box meets the recommended size enclosure for the single sub i ordered, which is the Rockford P2D4. Ported to trick the sub its in a bigger box with poly fill lining. Well built and carpeted in dark gray. I highly recommend it. Hits lows hard and loud.

70 of 83 found this helpful

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Pineville, LA

Overall
Durability
Value
Features
Design
Usability
Worth the space

May 5, 2014

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I downgraded from a much larger box to this one and noticed no difference. Saved me some space, though it's still pretty big, and handles the sub perfectly. Feels sturdy and looks good.

67 of 81 found this helpful

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Harrisburg, PA

Overall
Durability
Value
Features
Design
Usability
Very very nice, exact specs below.

July 4, 2013

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Very nice box. The carpet is nice and seems to be glued properly, although it does look like it might rub off in time. Build quality is very nice, feels very sturdy. There are some globs of dried glue on the exterior but nothing I can't get over. It would have been nice to not have the sub cutout so close to the port but that's just nitpicking. Doesn't come with wires internally but the terminals are much nicer than I've seen on other prefab boxes.
Regardless of what Belva has published, this box is not 1.8 ft.

The gross volume is 1.97 ft, but after taking into account port displacement, it's net volume is 1.30 ft. It's also tuned to 34.4 Hz. Determined using the Torres Speaker Box Calculator.

65 of 77 found this helpful

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Simpsonville, SC

Overall
Durability
Value
Features
Design
Usability
Great Prefab box

September 23, 2013

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I would highly recommend this box it sounds like it is tuned between 34-36hz hits lows really good unlike i was expecting since it is vented. I had a rockford fosgate p3 and it sounded amazing in the box and now I have an Alpine type S in there until my new p3 comes back in and the type s even sounds great i didnt think a type s would pound like it did. Good box would def recommend and buy again if need be.

63 of 75 found this helpful

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NEWPORT NEWS, VA

Overall
Durability
Value
Features
Design
Usability
Great strong box

August 24, 2014

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Great box, solid construction, easy set up. I personally prefer an exterior terminal connection that is a push type, but this screw type works just fine. I highly recommend.

63 of 76 found this helpful

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COLLEGE PARK, GA

Overall
Durability
Value
Features
Design
Usability
Great product

June 8, 2014

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Slim and powerful speaker that packs massive power for a great price.

65 of 80 found this helpful

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Minneapolis, MN

Overall
Durability
Value
Features
Design
Usability
Not bad

December 23, 2013

The following review is for 1SV12B, which is a part of the bundle you are viewing.

So I bought one of the "Sonic Boxes" a couple years back and it was similar to this box but gray. The sonic box was better build quality. This box has a hole cut that is nowhere near center. It's up and to the right a bit, but that's what you get for a 55 dollar box I guess. The carpet around the ported has started to come unglued and the box hasn't had any play time what so ever. It seems to be mdf and 3/4". The dimensions are correct. Port tune is around 35 hz and net box size is around 1.4 cubic ft. The poly fill probably needs to be glued down so I will stay inside the box. The port used to be rounded on the inside with the sonic box now it is not. It is a good box to get by on since it is built pretty well, but I would recommend getting a box built to spec for the woofer you have for optimal sound. For 55 bucks it's not a bad way to get by, just don't expect the best for that price point.

61 of 72 found this helpful

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Holiday Florida

Overall
Durability
Value
Features
Design
Usability
Great

August 13, 2012

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Greatest box I've owned sounds great in a smaller car I had it in a bigger car and would have needed two to get the bass I wanted outta them but then I bought a ford fiesta and it's smaller so it sound great and is perfect for my little car

63 of 76 found this helpful

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Birmingham, AL

Overall
Durability
Value
Features
Design
Usability
Solid for a cheap option

June 18, 2013

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I used this with a JL Audio 12WX sub powered off a Polk Audio amp giving it 200 rms. The box produced great output considering the entry level power and for a non-audiophile the clarity will be fine. Yes, a custom made box is ideal but if that's not an option for you then this is a suitable alternative.

60 of 71 found this helpful

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Terrell, Tx.

Overall
Durability
Value
Features
Design
Usability
great boxes

March 9, 2015

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Great construction. Good solid connections for your speaker.If I needed another one. I would look no further.

61 of 74 found this helpful

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North Hartland, VT

Overall
Durability
Value
Features
Design
Usability
Nice Box

March 5, 2015

The following review is for 1SV12B, which is a part of the bundle you are viewing.

This box will definitely help the RIGHT sub put out some serious bass.

60 of 72 found this helpful

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elgin, TX

Overall
Durability
Value
Features
Design
Usability
Belva

February 11, 2015

The following review is for 1SV12B, which is a part of the bundle you are viewing.

This cost more then the gray one but they both perform the same just that the black exterior looks way better then the gray

60 of 72 found this helpful

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Douglas, GA

Overall
Durability
Value
Features
Design
Usability
Awesome box

December 15, 2014

The following review is for 1SV12B, which is a part of the bundle you are viewing.

This box sounds great coupled with a Pioneer Champion Series Pro and 1500 watt amp. Very deep bass tones and very loud. Definitely would recommend.

60 of 73 found this helpful

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Mesa,AZ

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Durability
Value
Features
Design
Usability
AWESOME BOX!!!

May 9, 2011

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I dropped my Fosgate P3 into this box and HOLY CRAP!!! I had this sub in a sealed for a while and thought it was loud.....but now its insane!!!! LOUDER THAN HELL! GET THIS BOX IF YOU HAVE a TYPE R OR P3!!

58 of 69 found this helpful

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MILWAUKEE WI

Overall
Durability
Value
Features
Design
Usability
BEST BOX EVER

September 17, 2013

The following review is for 1SV12B, which is a part of the bundle you are viewing.

MY MUSIC IS SO LOUD NOW. I LOVE IT!! NO ONE LIKES TO SIT IN THERE WITH THE VOLUME UP. ITS AWESOME! AND SONICELECTRONICS GOT IT TO ME IN A TIMELY MANNER! THANKS!!! CARPET IS GREAT! PERFECT SIZE TOO! I HAVE A SWR12D2 ALPINE TYPE R. JUST ONE!

56 of 67 found this helpful

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las vegas, NV

Overall
Durability
Value
Features
Design
Usability
nice box

October 15, 2013

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Nice box,good bass tones,Great price,thinking about getting another for the car,

55 of 66 found this helpful

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UKIAH, CA

Overall
Durability
Value
Features
Design
Usability
Great Box

August 8, 2011

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I bought this for my RE sex sub and sounds perfect. my sub is a 12in sub but i had to get the sub cut out widened. Local car audio place did it for free.

55 of 66 found this helpful

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Bloomington, CA

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Durability
Value
Features
Design
Usability
Banging

March 24, 2014

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Good box for the money. Sounds great!! Feels durable. Nothing to complaint about. Always been the vented type guy.

53 of 63 found this helpful

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bartlett, IL

Overall
Durability
Value
Features
Design
Usability
Perfect Specs for JL 12W3V3 Ported Enclosure

December 23, 2011

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I searched for a decent sub enclosure that would match the JL Audio specifications for the 12W3V3 in a ported enclosure.
This sonic sub box was a near perfect match for specified enclosure volume (1.7 cuft) and port tuned frequency (31 HZ, after measuring the port size, length and using online calculators).
Shipping was a little expensive (30.00) but it arrived in a day and 1/2. The box is solid and well constructed- not perfect- it has a hand built appearance- but it is sufficient.
The JL sub fit in the opening with no issue. The terminals are light duty but also sufficient.
After much research and deliberation, I did add some layers of poly fill batting to the walls of the enclosure's interior. I bought some pre-cut 1" thick pads from the fabric store- they were sold as baby crib side cushion padding. I put one layer on the top, bottom and left and right sides, being careful not to obstruct or block the entrance to the port slot. I put two layers on the wall directly behind the woofer. now the woofer back wave sees a group of nicely padded walls.
Again, after reading the pros and cons of doing this with a ported enclosure, I took a chance and did it before listening to the speaker- I wanted to get it right the first time I put it together. I had a hard time with envisioning running the sub with no padding on the interior walls.
The results are paying off- I seem to have plenty of output from the 12W3, and it is absolutely tight and deep when compared to other ported subs I have heard, and there is zero unwanted port noise- and no muddiness or booming.
The sound is right on the money- absolutely perfect and exceeded my expectations.
My only issue is the size of the enclosure- it takes up about a third of my small SUV's cargo area.
In the future I may try to find a much smaller enclosure and go sealed, about a third less volume than the JL specs for sealed, and maximize the volume with a complete polyfill stuffing and see what that sounds like. Maybe not though, this one sounds like a winner with the JL 12 W3 and it isn't even broken in yet!

54 of 65 found this helpful

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Philadelphia

Overall
Durability
Value
Features
Design
Usability
nice enclosure

February 13, 2015

The following review is for 1SV12B, which is a part of the bundle you are viewing.

This was a very good enclosure not cheap made at all I got a jl w3 12" in it and it sounds very good better than my 2 12 inch pioneer in a seal box

54 of 66 found this helpful

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Wisconsin

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Durability
Value
Features
Design
Usability
Belva 1SV12B

February 9, 2015

The following review is for 1SV12B, which is a part of the bundle you are viewing.

This box is well vented.. Made professionally, looks nice, and bumps HARD with my Rockford Fosgate sub. It pounds the hell out of my big car. Fantastic and well worth the money.

52 of 62 found this helpful

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Canada

Overall
Durability
Value
Features
Design
Usability
Just got it all installed, love it.

May 6, 2011

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Pros, loud as hell! Cons, its a really deep box. Got the Boss phantom subwoofer installed into this box, and couldnt be happier! I only just got it installed, but so far, it's been unbelievably loud. Recommend it for sure.

53 of 64 found this helpful

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FL

Overall
Durability
Value
Features
Design
Usability
Best box I've ever bought

April 6, 2014

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I can't believe I didn't know about his website before now.. This box was worth every penny I spent... Great quality and amazing support when I had questions.. Will definitely be ordering from them again

51 of 61 found this helpful

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San Antonio, TX

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Value
Features
Design
Usability
Worth the price for the convenience.

September 18, 2013

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Made installation a snap without having to build something. Sounds great.

51 of 61 found this helpful

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troy, VA

Overall
Durability
Value
Features
Design
Usability
nice

February 2, 2012

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Pretty good box mine was broke but it was probably a rare instance

51 of 61 found this helpful

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Valencia, CA

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Durability
Value
Features
Design
Usability
Well built

July 21, 2014

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I purchased this box for a 12' kicker cvx. First of all this box was built well and very sturdy. However, the sub I installed needed a little more air space. I would recommend this box for any subwoofer under 600 watts.

51 of 62 found this helpful

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Milner, Ga

Overall
Durability
Value
Features
Design
Usability
great buy

March 24, 2014

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Its a wonderful box, I'm enjoying it right now, it sounds good in my Honda Accord.

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Green Bay, Wisconsin

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Nicely built, sounds great.

November 5, 2013

The following review is for 1SV12B, which is a part of the bundle you are viewing.

The box is very nice. It has polyfill in it, the polyfill is not secured very well it is probably best to go through and glue it down, and is built very nicely. The box will (more than likely) splinter when you try to screw holes into it but its MDF and that's what MDF does. It sounds great with an Orion XTR PRO 12 4 in it and hits lows very nicely.

I would definitely recommend to anyone who was looking for a relatively cheap but nicely built box.

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North Carolina

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Boyfriend Loves this box.

January 16, 2014

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I purchased this box for my boyfriends Xmas present. He absolutely loves it. It's built strong, good insulation, love the look and overall it makes a speaker sound wonderful. His Planet Audio sounds 10x better than it ever has. Only complaint was the wiring area. Complicated to wire through so we ran them trough the port. Just as easy works just as well.

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Maryland

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Great value

February 21, 2013

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I bought this boxes wondering what it would sound like I put my candy red audio pipe in that box Ty really gave my the boom i was looking for overall great box i would recommend it

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Spokane, WA

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All i can say is WOW

February 20, 2013

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Well, i bought this box with a 12" rockford t2d2 to place in it. I noticed this box was around 40 pounds and my sub was around 70 pounds.

I was a bit skeptical at first when i placed it in, thinking the box would break. I have been pounding the living hell out of that sub and it has sounded clean, loud, and incredible... Perfect amount of air space, 1.8 cubes.

Def would recommend this to anyone...

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Fresno, CA

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Great!

August 12, 2011

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Ive had no problems with this box.

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Bluffton, IN

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enclosure

April 29, 2014

The following review is for 1SV12B, which is a part of the bundle you are viewing.

for what it is the enclosure is well built and worht the cost. but for the application it ws recomended for its acctually to small. way to small for the sub but still worth the money if nothing elese for the quality of the build.

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Boise, ID

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Great Box

April 28, 2014

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Would definitely recommend this box. Put a Fosgate T1 in this box and it sounds really great. Didn't think it would have enough volume for the sub but it is awesome. One of the cons when I received the box the carpet was comin off on one side, but nothing some good old adhesive spray can't fix.

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Canton, IL

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Awesome box, BUT DON'T buy thinking your going to hit low notes

September 6, 2013

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Really good box but don't buy thinking you are going to hit the low notes. Way better then sealed!!!

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Easley, SC

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It is a good box

February 20, 2012

The following review is for 1SV12B, which is a part of the bundle you are viewing.

It is a really good box the only problem i have is with the terminals and the terminal cup. For one thing you might want to put some silicone around the inside to seal it off and the other thing is that the terminal nuts get lose and the terminals touched each other and blew out my sub. So if u buy this box make sure that the nut are TIGHT!!!! If not it will losen up and the terminals could touch and blow your sub.

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California

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pretty solid

May 3, 2011

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I had a 12" Alpine Type X in this box. For the first year it slapped pretty hard and I had no complaints about the level of sound it would put out. I would be pleased but after a little more than a year my sub ripped the faceplate off of the box, or whatever u call the wood that the sub attaches too. All in all, this box would be great for a sub that is around the 500 RMS range, just be careful with big subs.

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Boise, Idaho

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Best box for Alpine Type R

December 27, 2014

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I saw a lot of other boxes for all around the same price and the reviews were so mixed. A buddy of mine has two type r's in the basic Alpine boxes and it doesn't come close to how loud these boxes are. Personally, the 3/4" MDF/polyfil combo produces a much deeper, better bass than all of the other boxes. GET THIS BOX IF FOR TYPE E/X/R or any subwoofer that it fits the Ported Enclosure Volume range!

It is 27 December 2014 and I installed my Type R in this box with an Orion CO2400.1D amp and SoundQuest 2F Capacitor around Thanksgiving of 2014. It sounds amazing!

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Wayland, MI

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sturdy but bad port design

March 18, 2015

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I put a alpine type r in this in my 2000 ram ext. Cab on the back seat and I can hear air rushing through the port I wish I would have went with a sealed box and the hole was off center this box would be good for a trunk of a car

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milford, OH

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This box works well

September 18, 2013

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Paired with an alpine type r it works very well and adds much boom to my system I have no issues with this box at all not a custom but solid sounds good and much More easy to come by if you don't have time or restores to build your own, before this box my bass was loud after this box my bass was a bomb

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Livermore, CA

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Cut out (inches) was not accurate

October 4, 2013

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I used this box with an RE REX 12" and the hole was not big enough. I'm too lazy to go back and dig up my measurements, but the hole was a tad bit smaller than advertise.

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Fort Myers, Florida

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Great bang for buck

October 8, 2011

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Had this box with an RE Audio SEX, sounded great for a week while breaking it in then speaker fell apart lol. Now I got a Sundown SA12 and this thing slaps. Very nice for a prefab, can't beat the price. But shipping could have been better. Speaker wire terminals could be better also, but whatever it works.

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Laurel Hill, NC

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Good vaulue

November 18, 2010

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I have type r in it . Works for me

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Canada

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Good tasty box

May 20, 2012

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Great box. Have it with a 500 rms watt Alpine type r sub and an alpine mrp 500 amp. Sounds great in my jeep patriot suv. I bought some bananas clips in order to remove it with ease when i needed cargo space and mounted my amp in the spare tire compartment. I would recommened this sweet box to anybody.

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Costa Mesa, CA

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Great box

February 6, 2012

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I put my Pioneer TS-W309S4 sub in here and it sounds fantastic. Just as good and clear as my friend's 15. This box was relativly inexpensive and is quite sturdy. It looks great as well. The only con would be there is i tiny chunck of carpet missing on the port, it seems like they made it quickly. Either way, this is great box, you should buy it.

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Longmont Co.

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Sonic Sub Box: 1SV12

March 14, 2011

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Forget for a moment the price. The house system has a separate low end amp as such powered base cubes were not considered. (These became parts of a replacement).
Loaded with Fosgate P2s they work excelent.
Modifications:
Egg crate foam added inside except for port area.
1.5" wooden feet added for appearance and getting the cone area out of vacuum cleaner "range".
Suggestions.
Although the price was great I would gladly have gone a few more bucks for wood venear.
Down firing seam to be better. Would be nice if ther were that version even if somewhat larger. Size increase depending on driver characteristics.

All in all................
Good price and low hassle. The best recommendation is they need be heard, or do I mean felt.

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huntington beach ca

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cost the same as 3/4

May 21, 2010

The following review is for 1SV12B, which is a part of the bundle you are viewing.

This box was way more than I expected for twice the price. Shipped very fast and the carpet looks nice. Had a alpine R type in a 1cu ft box sealed that I was very disappointed in. I was gonna stash it in a corner till the end of time but I saw this box and come on 35 bucks. Pdx 1.600..........R type.........this box.........= loud clear and hits all those bass notes that you know should be there. We all have our two favorite CD's that we turn to every time you turn on a new system. Anyway my cousin is now gonna get two of them and why he wants it that ear splitting loud is way beyond me. Or is it?

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Rapid City, SD

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Features
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Best Sound Quality

April 29, 2011

The following review is for 1SV12B, which is a part of the bundle you are viewing.

"BEST" Box ever. I have a JL Audio 12W7 on JL Audio 1000.1 and this sub hits HARD. MY friend asked why my sub hits harder then his 2 12" Audiobahn Immortals. I Would RECOMMEND this box for serious Bass

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North fort myers, FL

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Awesome box for the price

July 9, 2012

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Great price. This box is constructed well and looks great. I put a CVR12 in this box and it sounds a lot better than my old small sealed box setup. I would definitely recommend this box.

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NEW CASTLE DELAWARE

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GREAT VALUE

May 7, 2015

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I WOULD RECOMMEND THIS PRODUCT NICE BOX WELL MADE FIVE STARS

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Jamestown ND

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Absolutely Great!

April 21, 2015

The following review is for 1SV12B, which is a part of the bundle you are viewing.

These are good quality boxes with tons of space for larger subs! Have 2 of these and each one has a RE Audio SEx V2 in it. Although I had to sand the edges of the boxes to fit those monsters in they hold up to the test and make them both sound really good! Love the black carpeting and its probably weird but these things smell great! Definitely recommend these boxes

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Tewksbury, MA

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Gets It Done

May 24, 2012

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I like this box. It's simple, plain, sharp and clean. It was just what I needed. I have a Type R in mine, and it's wonderful. Does its job well.

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lorain,oh

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you get what u pay for

April 24, 2012

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Do not try to put a sub that can handle a ton of watts in this box. I have an re. xxx12 and blew the joints out of this thing...other than that I'm sure it is good for subs putting out less than 1000 watts...

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Brentwood, ny

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Excellentt

April 23, 2012

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Product is real good and have used for more than 6 months still working really good.

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Sherman Oaks, CA

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Um Yeah !!!!

November 2, 2011

The following review is for 1SV12B, which is a part of the bundle you are viewing.

If your questioning the quality of this enclosure. Question No More. It is built sturdy, solid (not dry) MDF, all corners are properly sealed, last but not least they even took the extra step in making the Tuned Port Wall with a Rounded Edge!!!! I don't care who you are thats A GREAT DEAL!!!!

Perfect for the EARTHQUAKE SOUND Tremor -X124
P.S Remove the Terminal Box and throw a bead of silicone around it. It will eventually allow air to escape.

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Salina, KS

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Great box!

June 12, 2015

The following review is for 1SV12B, which is a part of the bundle you are viewing.

This box looks and sounds amazing! Its so loud and definatly worth it at this price!

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Hixson, TN

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Value
Features
Design
Usability
Belva Vented Woofer Enclosure

September 16, 2015

The following review is for 1SV12B, which is a part of the bundle you are viewing.

My NVX VCW 122 fit with ease in this enclosure. The enclosure has a nice black carpet covering it and has polyfill to really bring your woofer to life. Not to mention this enclosure survived a hard wreck due to a drunk driver hitting my tail end. It currently is dinged on the exterior a little but works phenomenally.

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Latrobe PA

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Nice box

November 1, 2015

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Strong nice box. Put a Cerwin Vega hed 12 in it and it sounds amazing.

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Wausau, WI

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Very well built box!

October 3, 2018

The following review is for 1SV12B, which is a part of the bundle you are viewing.

This box looks very nice and it's not too heavy at all. It's the perfect size for any small sedan vehicle. It's also very well built. I really like the cotton material on the inside because that helps make the sound even better.

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Stephenville, TX

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Good quality speaker wire

September 20, 2018

The following review is for TC4SW16-25, which is a part of the bundle you are viewing.

This is some good wire. I got it for free with the bass package I ordered.

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Stephenville, TX

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Perfect ported box

September 20, 2018

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I have a Massive Audio ECO in this box and it hits low and deep ( that's what she said) Highly recommend this box or any box made by Belva.

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Pueblo,CO

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JustBuyIt!!!

September 16, 2018

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I have a 12JlAudio W3. Recently went from 2-12w6 to the 1-12W3. This Box was worth every dollar! This W3 sounds amazing in this box! Plus I save 25% of my trunk space not have 2-12s. This box definitely exceeded my expectations for my W3. Great quality at a Great Price! Don’t hesitate on this box just buy it!

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New York queens

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Great price good brand

September 4, 2018

There are good subwoofer not bad for the price and hits hard

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Wisconsin

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Good box

August 21, 2018

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Good box. Hits pretty well. My terminal broke out of the box but I believe it was my fault.

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Ramsey, MN

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best budget sub

August 21, 2018

The following review is for S-W12D4, which is a part of the bundle you are viewing.

bought 2 of these they sound great on my nvx amps

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Taunton, MA.

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Such a great deal!

August 16, 2018

12inch alpine with a ported box for under $150?? You won't find a better deal anywhere else. It is the perfect amount of bass to add to your stereo system, when paired with a good amp it is enough to make all the mirrors shake and your body tingle all over. You will feel it through your seat. I highly recommend this amp box combo.

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Bonneville, Ms

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Great value, great name and great bass

August 14, 2018

The following review is for S-W12D4, which is a part of the bundle you are viewing.

If your looking for a budget happy bass build you'll be happy with this one. I purchased one of these not thinking about my box being a single 15" box. Well I had a piece of solid hardwood flooring that I cut a 12" face out of and put over the 15" whole. I have an Infinity Reference series 611a amp on this thing turned almost halfway on the gain, nearly full on the bass boost and 3/4 on the variable bass optimisation. I ported and tuned the box myself and people think I got two twelves instead of one. Pros. Alpine Great price Cons. Don't hit the low end bass notes as well

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Walden NY

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???? wow

August 9, 2018

The following review is for S-W12D4, which is a part of the bundle you are viewing.

Brought this sub as a package deal! Let me tell you it hits hard. Will not disappoint.

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Denver, co

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Great box!!!

August 3, 2018

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Great quality, sounds great, would definitely recommend and would buy again

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Martinsville, VA

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Overall
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Value
Features
Design
Usability
Single 12" Vented MDF Subwoofer Enclosure (Belva 1SV12B)

June 26, 2018

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I like this box. great box for the money if your on a budget like I am. it bangs really hard for what it is. it's not really good for the low low freqs but for the mid lows it does its job well! I get compliments everywhere I go. it gives me a lot of trunk space. which is a must have for me

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Philly

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Solid!

May 2, 2018

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Nice solid enclosure my infinity kappa hits very nice in this

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Clarkston , mi

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Great value . Couldn't get a better price anywhere else

May 2, 2018

Definitely recommend. Great speaker . Great build quality on the box . Couldn't get this for cheaper anywhere .

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Louisiana

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Features
Design
Usability
Great Value

April 26, 2018

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I bought this for my 12” Alpine. Sounds awesome. Cheapest price and quality is super.

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MA

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Great value

April 25, 2018

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Very high quality box especially for the price. Thicker than most boxes on the market too which is a plus.

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Maryland

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Design
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Great value

April 13, 2018

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Box is sturdy and nicely build. However the speaker wire attachment wasn't to good.

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Heber ca

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Features
Design
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Great quality

April 9, 2018

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Great quality overall does the job and for the price im extremely happy with it !!!!!!!!!!!!!!!

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Columbia, SC

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Well built, excellent value

March 29, 2018

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I was surprised of the quality of these sub boxes when they arrived. For the money, I doubt you could do better and I've purchase other similar boxes at twice the price that don't measure up to these. The acoustical damping material is also a bonus, although it would be nice to have a little more "stuffing" for better damping. But you can always add some fiberglas insulation if needed. I will be using these again. The only other suggestions would be to add another small cutout hole for the additional of a tweeter, which is what I did on 8 of these. I am not using the box as a subwoofer, but a two way full range system and Eminence drivers.

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$city, $state

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Great sub box for my alpine type r

March 28, 2018

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Great quality box Works perfect with my alpine type R great sound and great quality

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Oklahoma

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It awesome!

March 23, 2018

The following review is for 1SV12B, which is a part of the bundle you are viewing.

The sound so smooth and great bass with those box! I would keep buy it! Grade A for that box and it come in as great shape! No damage or anything

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Scranton pa

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Great box for being a prefab!

March 19, 2018

The following review is for 1SV12B, which is a part of the bundle you are viewing.

If you are just getting into car audio and want something ported and have an entry level P2 or something along those lines, this subwoofer box is amazing for the 12" subs!! I upgrade my sub a week ago... Unfortunately it's choking my new sub like a mofo!! But it's also a custom built psi platform 2 with hd upgrade ????. Overall I'd recommend this to anyone who wants to start off car audio with ported boxes

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Myrtle Beach, SC

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Great product

March 19, 2018

The following review is for 1SV12B, which is a part of the bundle you are viewing.

The product comes packed with polyfill sheets which I didn’t expect (though it’s probably in the description). The wood is cut at sharp angles which is expected but the carpeting is very thin which I wasn’t a huge fan of. I also have a B-Box and it had thicker carpeting giving it a much better feel. The terminals are nicer than expected, accepting banana-type connections as well as screwing down on the ends if you don’t have banana connectors.

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Milton FL

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Design
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ported enclosure

March 13, 2018

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Well made and padded inside. Looks good and sounds good too.

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Mesa, AZ

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Design
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Nice box

March 12, 2018

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Got this box for free with my Image Dynamics IDQ12. Box is sturdy and looks nice. No complaints even if I had to pay for it. Would buy.

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Houston

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Free Box

March 8, 2018

The following review is for 1SV12B, which is a part of the bundle you are viewing.

The box was free with the purchase of a 12 inch infiniti Kappa sub. I read a review stating that it perfectly, that is not true. I had to widen the hole so the sub could fit flush. Why include a box when its now made for it?

Anyways it seems to be durable and do not take up much space which was a plus for me being a family man. It do look cheap though. I can't speak on sound because the kappa is weak compared to my 15 P3 so I'm not sure if it's the box or the sub. I think it's a good box for an overall cheap set yup. I plan to go sealed

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Atkins, IA

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Great product

November 28, 2017

The following review is for 1SV12B, which is a part of the bundle you are viewing.

This 12" subwoofer box was well built and shipping of product was fast.

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Staten island, NY

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Design
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Amzing

September 15, 2017

The following review is for 1SV12B, which is a part of the bundle you are viewing.

The sound quality this box delivers is amaziing!! I love it! I ise it with a Jl 12 in sub,,, the results are incredibly amazing!! Jl delivers the best quality of sound.

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Schenectady, NY

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Major air leaks

August 28, 2017

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I got this free with a sub (IDQ12)
The box seems sturdy and well constructed but the air leaks were so loud that I couldn't fully enjoy my new subs. Not sure if I can do anything to remedy it on my end as I don't wanna go thru the hassle of doing a return. I'm sure it's a great box. I just happened to get a defective one.

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Independence, MO

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Decent box

August 24, 2017

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Good we'll built box. Fits decently in my F150 extended cab. Never had need far back. So box, subs, amps, ect, fills the empty space perfectly

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vallejo, CA

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Solid investment. worth the money

July 14, 2017

The following review is for 1SV12B, which is a part of the bundle you are viewing.

This is a great subwoofer box for someone looking to add some decent low in punch to their system. I used it with a kenwood kfc 12 (400 rms) sub and it works really well. The tuning of this box is lower than most in this price range. Polyfil is a added bonus. This is for standard 12 subs. Would not use for anything serious (800+ rms) as the box will easily start to fall apart.
This does not mean its a bad or cheap box. Its just not designed for higher spl type subs.

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$city, $state

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Weak terminals

July 8, 2017

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Terminals are weak. At 1 ohm 800 rms they melted. Other then that sub sounds good. Nice strong soild box

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New york

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Great value

October 27, 2016

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Works and sounds great does what it soppose to do

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Tampa, FL

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big black box

October 2, 2016

The following review is for 1SV12B, which is a part of the bundle you are viewing.

sound awesome with my 12" nvx speaker my truck now shake. the box was build with 3/4 wood very nicely make.

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Allen Park, MI

Verified Purchase
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Design
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Great for my RE 12" Sub

September 8, 2016

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Nice box. Well built and very sturdy. I like the binding posts, too. I had to file the opening just a bit to fit the RE SEX V.2 that I put in it. No biggie. I also pulled back the poly-fill that was covering the vent opening and stapled it to the vent board so air could move more freely.

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East grand forks, MN

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Great box

August 22, 2016

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Good sound can't beat the price for this box
I would buy again and recommend it to others

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Russell, KS

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Amazing quality

August 3, 2016

The following review is for 1SV12B, which is a part of the bundle you are viewing.

This box is incredibly solid, my 12inch Alpine mounted no problem. The port on this box is nice and had a really good tone, excellent sound, sounds like a 15inch slamming I'm my trunk. Will fit in a 1994 Ford Mustang with no modifications if anyone needs to know.

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Ocala Florida

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Nice Box!

March 10, 2016

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Well built and stands up to my digital design's 712 hits highs hard and picks up some lows overall great frequency output! Definitely worth the money and looks good with my car interior I'd highly suggest.

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Topeka, KS

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Cannot be beat for the price.

February 16, 2016

The following review is for 1SV12B, which is a part of the bundle you are viewing.

Heavy construction with heavy duty speaker terminals. Very pleasing to the eye with good quality carpet.

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beaver pa

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suprised

January 4, 2016

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I wAs surprised when it came in the mail how heavy and greatly built and sturdy it was out my Memphis in it and was blown away 50 bucks sounds like a lie but your won't be disappointed

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Los Angeles

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12 Subwoofer Box

December 29, 2015

The following review is for 1SV12B, which is a part of the bundle you are viewing.

I recently bought this product for my Pioneer Champion Series Pro 12 & it goes well with it..
Would recommend it if your going for something small & space saving..

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Accessory Tools and Products

Accessories added

12" Protective Waffle Subwoofer Grille

Keep your subwoofer looking amazing while keeping it safe.

Your Price $8.00

25 ft. of Streetwires 12 Gauge Speaker Cable

You'll need speaker wire to hook up that new subwoofer!

Your Price $45.99

Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

Your Price $14.99

20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

Your Price $59.99

40 Square Feet of Sound Dampening Material

Thicker than the competition, complete sound damping kit for entire vehicle! Use for trunk, doors, roof and floor.

Your Price $79.95

Stinger Sound Dampening Trunk Kit

Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for your whole trunk!

Your Price $73.99

Stinger Sound Dampening Bulk Kit

Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for the whole car!

Your Price $105.99

Dynamat Sound Dampening Trunk Kit

Did you know sound dampening will reduce those annoying rattles and even increase your SPL?

Your Price $177.99

Dynamat Sound Dampening Bulk Kit

Did you know sound dampening will reduce those annoying rattles and even increase your SPL?

Your Price $287.99

2" Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

Universal rubber roller to make it easy to install sound dampening.

Your Price $7.99

Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $11.99

12 oz. Can of Adhesive Spray

Spray adhesive used for adhering carpet to subwoofer boxes without bubbles.

Your Price $8.99

Gold Plated Dual Terminal Banana Plug Connector

Enables an expandable, secure connection accepting up to 8 gauge wire.

Your Price $1.99

Scosche SPL Meter

Monitor the noise level of your new car audio system with this SPL meter measuring from 60-135 dB.

Your Price $23.99

1 Alpine Type-S (S-W12D4) 12" Subwoofer with Ported Box and speaker wire Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Alpine Type-S (S-W12D4) 12" Subwoofer with Ported Box and speaker wire Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

3 Alpine Type-S (S-W12D4) 12" Subwoofer with Ported Box and speaker wire Subwoofers

Mono Amp

4 Channel Amp

4 Alpine Type-S (S-W12D4) 12" Subwoofer with Ported Box and speaker wire Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Site : 247 Sonic Electronix is disabled.

Product Summary

Manufacturer

Model Number

SWS-12D4 BBX112BK XWS1625

Weight

50.55lbs

Internal SKU

sws12d4_bbx112bk_xws1625

Internal Product ID

134281

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Alpine Type-S (S-W12D4) 12" Subwoofer with Ported Box and speaker wire

Item Added to Cart

Alpine Type-S (S-W12D4) 12" Subwoofer with Ported Box and speaker wire

1500W Peak 12" Type-S Series Dual 4-ohm High Performance Subwoofer + Ported Car Subwoofer Box Enclosure with Custom Black Baffle Package

$149.99

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3 years of protection

12" Protective Waffle Subwoofer Grille

Keep your subwoofer looking amazing while keeping it safe.

$8.00

Add
25 ft. of Streetwires 12 Gauge Speaker Cable

You'll need speaker wire to hook up that new subwoofer!

$45.99

Add
20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

$59.99

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