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  7. Alpine (2) S-W12D4,MDFD12

Alpine SWS-12D4 with Sealed Dual Enclosure

1800W Peak (600W RMS) 12" Type-S Series Dual 4 Ohm Car Subwoofer

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• 1800 Watts Max
• 600 Watts RMS
• Pulp/Kevlar Cone
• High Amplitude Multi-Roll (HAMR) Surround
• High Strength Steel Frame Basket
• Progressive Spider with Reinforced Layer Tinsel Leads
• Includes Sealed Dual Enclosure

Learn more about the sws12d4_mdfd12_xws1225
List $539.99

$499.99

with warranty

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Product Highlights

• 1800 Watts Max
• 600 Watts RMS
• Pulp/Kevlar Cone
• High Amplitude Multi-Roll (HAMR) Surround
• High Strength Steel Frame Basket
• Progressive Spider with Reinforced Layer Tinsel Leads
• Includes Sealed Dual Enclosure

Description

Alpine

Authorized dealer



Alpine S-W12D4

1800W Peak (600W RMS) 12" Type-S Series Dual 4 Ohm Car Subwoofer
Quantity: 2

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 Sonic Electronix Warranty

    • Priced Individually

Dual 12" 3/4 MDF Sealed Subwoofer Enclosure (Belva MDFD12)

Dual 12-inch Sealed Car Sub Box Made with 3/4" MDF and lined w/Polyfil (2.46 cu ft Airspace - 12SQB)
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

General Features:

  • Dual Sealed 12" Enclosure
  • Internal box volume: 2.5 cubic ft. total air space - 1.25 cubic ft. per chamber.
  • High Quality 3/4" MDF Construction
  • Durable black carpeting
  • Pre-lined with Poly-Fil
  • Seams are fully caulked for better efficiency
  • 2 Separate chambers allowing each subwoofer its own air space
  • Gold post terminals for clean and easy wiring access
  • Box Dimensions: 28" Wide, 14" Depth, 14" Height
  • 30 Day return policy


Specifications & Details

Subwoofer Specifications
Series
Type-S Series
Subwoofer Size
12"
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
4 ohms
Final Wired Impedance
RMS Power Handling
600 watts
Peak Power Handling
1800 watts
Woofer Composition
Woofer Surround
High Roll Foam
Sensitivity
86.4 dB
Frequency Response
24 - 200 Hz
Xmax (millimeters)
15 mm
Subwoofer Design
Round / Circle
Enclosure Specifications
Box Type
Sealed
Number of Subs/Speakers
2
Box Style/Shape
Square/Rectangle
Height
13.25"
Width
30.25"
Depth
14.5"
Wood Thickness
3/4"
Number of Terminals
2
Terminal Type
Binding posts (banana clip ready)
Box Exterior Color
Black
Box Finish
Carpet
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details

Manufacturer:

Alpine

Model Number:

(2) S-W12D4,MDFD12

Weight:

67.00lbs

Internal SKU:

sws12d4_mdfd12_xws1225

Internal Product ID:

136273

Product and How-to Videos

  • Alpine Type-S Subwoofers
  • How to Install a Car Subwoofer in a Box
  • Car Subwoofer Size Buying Guide | What Size of Sub Should I Get?

Customer Ratings & Reviews

Alpine SWS-12D4 with Sealed Dual Enclosure
116
Rate or review product
5 star
76%
4 star
19%
3 star
3%
2 star
2%
1 star
0%
Durability
4.7
Value
4.9
Features
4.7
Design
4.7
Usability
4.8
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Good Box

The following review is for MDFD12, which is a part of the bundle you are viewing.

Great box does well with my subs would buy again

By Dennis on May 4, 2012

82

found this helpful.
Helpful? Report abuse

Heavy Duty!

The following review is for MDFD12, which is a part of the bundle you are viewing.

I would recommend this product for the guy's out there that are serious about their music. If you got good, high quality subs, then this box will make them perform to your sub's max output with out worry of blowing up your box.

By Scott on February 3, 2014

82

found this helpful.
Helpful? Report abuse

good box

The following review is for MDFD12, which is a part of the bundle you are viewing.

I bought this box for 2 12" kicker cvx subs 750 watts a piece its a great closed box for them especially stuffed 1/4 with pillow stuffing.. looks real good to.. quick shipping

By gage on February 6, 2011

79

found this helpful.
Helpful? Report abuse

solid sealed box!!!

The following review is for MDFD12, which is a part of the bundle you are viewing.

Cant beat the price. But it is really very good box. I put two 12" hifonic,also bought from here, with a 2 channel 1000 watt amp.It really shook my rearview mirror in my '97 towncar. My brother loved it so we put it in his '92 prelude.Wow!!! You can hear him before you see him. Great buy!!!

By Jasun on October 8, 2013

76

found this helpful.
Helpful? Report abuse

good value

The following review is for MDFD12, which is a part of the bundle you are viewing.

product worked for my new hifonics subs. that will be a winter system for my ride so i don't have to keep my main subs in all year round. i really like it mostly because its has black carpeting.

By bigmike on August 10, 2010

76

found this helpful.
Helpful? Report abuse

Amazing Enclosure, Even Better Price.

The following review is for MDFD12, which is a part of the bundle you are viewing.

Ordered this as my first enclosure, put two 12" subs in it and I haven't found a box that hits as hard and as clean as this one has. Will definitely buy from SonicElectronix again for my car audio needs.

By Arron-O-Suarus... on February 16, 2012

73

found this helpful.
Helpful? Report abuse

Fast and easy great buy

The following review is for MDFD12, which is a part of the bundle you are viewing.

I got my complete set up: 12" kicker subs box 1000watt Mbquart amp and amp kit. I have always installed my own equipment, I found it helpful that they have videos that covered some of the product they carry. There are a few shop's in Texas like Best buy and Custom Sounds that offer equipment. But the professionalism of the knowledgeable staff the price and the reliability made it clear that I wanted to do business with them.

By Robert on January 3, 2014

76

found this helpful.
Helpful? Report abuse

great box

The following review is for MDFD12, which is a part of the bundle you are viewing.

Very sturdy well built. Allows maximum bang. Great price under $60

By Dylan on January 5, 2015

73

found this helpful.
Helpful? Report abuse

Its a box

The following review is for MDFD12, which is a part of the bundle you are viewing.

have kicker 12, they sound alright have some loose paneling in my car, so I'm having trouble getting the clarity I want. over all its a box and it works.

By Jonathan on April 4, 2013

77

found this helpful.
Helpful? Report abuse

The Box that Rocks

The following review is for MDFD12, which is a part of the bundle you are viewing.

Appears to be fairly well built. Arrived with a little dent and a tear but its too little to bother with. Sounds nice but doesn't hit as deep as I would have liked. Small size however, leaves me some room for a couple of bags of groceries. Three stars for durability since I've only owned this for about a month.

By Kevin on November 1, 2014

74

found this helpful.
Helpful? Report abuse
See all 116 reviews

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