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Dual SD12

12" Single 4 ohm SD Series Car Subwoofer

Discontinued
|

We apologize

This item has been discontinued

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Bundled Savings with this Product

=

10% Off on the Subwoofer Box!

Save 10% off a 12" sealed subwoofer enclosure with your purchase!

3.50

35905

503

Dual SD12

$29.95

+

10% OFF

Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

$34.99

Special Price $31.49 ($34.99 if purchased separately)

Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

• 3/4" Medium Density Fiberboard Construction
• Durable Black Carpeting
• Pre-Lined with Poly-Fil
• Gold Speaker Terminals

(Offer 1 of 1)

Combined Total Price

$61.44

You Save $3.50

Product Features
  • 12" Single 4 ohm SD Series Subwoofer
  • Power Handling:
    • Peak: 500 watts
    • RMS: 175 watts
  • Impedance: 4 ohm
  • Polypropylene Cone
  • Black foam surround for high excursion
  • Stamped steel frame
  • Rubber magnet boot
  • 2" Voice Coil
  • Sensitivity: 88 dB
  • Frequency Response: 28-125 Hz
  • 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.
SD
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.
500 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.
175 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.
Single
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
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).
28 - 125 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".
88 dB
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.
Silver
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.
Polypropylene
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.
Foam
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.
No
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.
No

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.

Bandpass
Ported / Vented
Sealed
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.
.75 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.
1.25 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.
1.0 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.
1.50 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.
4-1/2"
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.
8-5/8"
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.

No

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
54%
4 Star
29%
3 Star
0%
2 Star
0%
1 Star
18%

Average Attribution Rating

Durability
4.0
Value
4.1
Features
3.5
Design
3.8
Usability
4.3

stonehill

kv, mo

Overall
Durability
Value
Features
Design
Usability

dual sd12

August 21, 2011

I have one on a dual 400 max amp running at 150 end and yes they hit hard and sound great but if you run it like I did it will blow and I have had it for a month now not a good idea.

4 of 4 found this helpful

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jesus

los lunas, NM

Overall
Durability
Value
Features
Design
Usability

Powerful!!

August 7, 2011

I have two of these subs hooked up to a 600 watt amp and an indash tv it pounds i just leave the remote less than half way its worth for the price this sub beats a rockford fosgate p1 sub

2 of 2 found this helpful

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Solomon

Diamond Springs CA

Overall
Durability
Value
Features
Design
Usability

Bang4TheBuck

May 18, 2011

Running 2 of these in a ported box (1.68 ft3) & 50hz and these things slam. Running a 600W rms amp about halfway up and they hit hard with no distortion or burning smell. Best bang 4 the buck ever. Can be heard several houses away shaking windows. You will like it for a more entry level system

2 of 2 found this helpful

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bigkeith11

Houston, TX

Overall
Durability
Value
Features
Design
Usability

Dual SD12

May 13, 2011

This is a good sub for a small system. At first the suspension is very stiff but over time it will loosen up and this woofer be at it full potential. I have had mine for a year now and it sounds great, i only have it running on about 110 watts and it is awesome, especially for only 30 bucks. Just the other day i played some test tones from 5hz-70hz. The woofer took it like a champ, I heard no distortion and at the end of the 30 min test the coil wasnt even warm!

2 of 2 found this helpful

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Jacob454

Harrah ok

Overall
Durability
Value
Features
Design
Usability

Great subwoofer

January 11, 2014

This sub sounds ok in my room but sounds 10 times better in my car definitely recommend this I got min up to 104 db

0 of 0 found this helpful

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worthless

letts, iowa

Overall
Durability
Value
Features
Design
Usability

Worst "sub" ever!

November 22, 2013

This sub sucked, I had it for a while but hadn't hooked it up till about a month ago. I finally got it hooked up, was working fine, I was loving it then all of a sudden I had no bass on my way home work. I got home and checked it out but it was a loose wire, no big deal. I got that fixed then it stopped again. One of the wires completely blew up (yes they were the right gauge.) My friend fixed it about a week later, worked for another day then I checked again. Everything looked right till I took the sub out of the box. The wire that comes on the sub had been shredded! I was pissed but my friend said he would fix it, but he doesn't/didn't have the time to fix it. I finally decided to test the durability. I wanted to see if it would be able to handle the hit from a pickaxe straight to it. My thoughts were going to be no it definitely wont be able to handle it. It took the first shot like a champion, the second was a little more damaging, as in everything was smashed and that people is why you should buy a dual sd12 subwoofer.

0 of 0 found this helpful

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Ookie

winchester

Overall
Durability
Value
Features
Design
Usability

best sub for under 50 bucks!!!

November 20, 2013

i have one of these dual 12" subs and it sounds great...the best thing about it is its cheap and will sound good in any box you put it in its better then most name brand entry level subs..only con about this sub it the terminal hook ups mine broke so i had to wire it straight to wire going into the coil but still works great...i would recommend this sub over any other brand for daily bassing ive had it on several amps sounds best on sony explod's or even a autotek 1000 rt 2 channel amp bridged so dont be afraid to buy it.

0 of 0 found this helpful

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The sub man

normal, il

Overall
Durability
Value
Features
Design
Usability

Good sub

November 16, 2013

I really recomend this sub it says it can hit 25 hz but it can go to 10 hz easy the bad thing about it is that is leaks air so you might need to put some silicon on the sub whe you put it in a box I have it on a 540 watt RMS amp and it sounds good

0 of 0 found this helpful

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bob

Spring, TX

Overall
Durability
Value
Features
Design
Usability

needed some upgrade

October 25, 2013

Now before you guys say anything, I'm not really into those big systems and very loud bass. I bought this for musical enjoyment and for some bass, its very clear to me its loud enough for me and its also a bang for your buck.

0 of 0 found this helpful

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mal

richmond, VA

Overall
Durability
Value
Features
Design
Usability

wooow

October 10, 2013

Really suprised that a cheap dual brand subwoofer would sound do d*** good. I've owned mine for 3 months now and it still plays tight clean bass.

0 of 0 found this helpful

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Malo

richmond,va

Overall
Durability
Value
Features
Design
Usability

amazed

October 6, 2013

Bought this to replace a blown boston accoustic 12 I had, im now running this along side a rockford P2. It hits hard and sounds really clean

0 of 0 found this helpful

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Anna

Nampa, ID

Overall
Durability
Value
Features
Design
Usability

kick butt speakers

September 21, 2013

i bought 6 of these things for a spl vehicle. i have a 1500 watt amp pushing 6 in a box and im hitting 150 db crazy good speakers!!!!

0 of 0 found this helpful

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Car stereo doctor

columbus ohio

Overall
Durability
Value
Features
Design
Usability

Best Bang for the buck

June 17, 2013

I have one in a ported box running from a punch 100ix..it SLAMS!!

0 of 0 found this helpful

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big dav

mitchell, SD

Overall
Durability
Value
Features
Design
Usability

dual 12 inch subs

April 1, 2013

I had one of these hooked up to a dual amp the sub is a 500 watt max and 175 rms the amp was a dual 400 watt but I was only getting 150 out of it it kicked hard

0 of 0 found this helpful

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jr

eunice

Overall
Durability
Value
Features
Design
Usability

good buy

March 27, 2013

i had 2 of these in a ported box on a sony explode 1000watt amp and they slamed vibrated my roof on my car

0 of 0 found this helpful

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davidtheslayer

lakeland Florida

Overall
Durability
Value
Features
Design
Usability

for $30...not bad! (made for simple upgraded sound) I love it!

March 16, 2013

If your looking to add a subwoofer to your automobile and your not wanting crazy shaking apart your car and you just want better sound with a little thump. then this is the sub for you...it can still saddle your vehicle a little bit! It'll add that bass...but your not going to be winning any competitions with it...it hits pretty low considering how much it is...I would recommend this subwoofer if you looking just to upgrade your audio system...if your looking to blow out your windows...then move on but this subwoofer defentaly adds bass with a good sound...it hasn't distorted with me and I always push this sub.

0 of 0 found this helpful

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skippy

altamont il

Overall
Durability
Value
Features
Design
Usability

was great for the price

January 13, 2013

bought one to put in an s10 and it was great for the price. had it hooked up to a 300w amp and it sounded as nice as the 2 Kenwood's it replaced. I'd defiantly buy another. I had it for a year and a half and sold it shortly after I sold the truck.

0 of 0 found this helpful

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Tpan

klamath falls, OR

Overall
Durability
Value
Features
Design
Usability

Dual sd12

July 19, 2012

This sub is alright. I'd rather my old school MTX Thunder 8000 12"s, but it's a good deal. I've got mine in a "Frankenbox" 4 order bandpass bridged on a "dual" 400w amp and it sounds pretty decent for what it is (a value sub), but I'm sure my box is doing a lot if not most of the work.

0 of 0 found this helpful

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matt

iola ks

Overall
Durability
Value
Features
Design
Usability

ok cheap sub

March 24, 2012

Not a bad sub if your on a strict budget or only want a lil extra bass. i had one of these in a prefab box pushing it with a 125rms off brand amp and it hit pretty hard in my 93 blazer. Not too bad. Shook the mirrors. I was definitely impressed. ordered some new subs and amp off ebay and the amp came in first. It was a 1000 watt crunch 2 channel. I hooked it up to this sub just to see how it would fair and was greatly impressed!! 2 of these with a decent 1000 watt amp and a good box will definitely give you good bass at a cheap price. I plan on building a system for my old ladys car with two of these in a ported box with a 1100 watt boss monoblock amp. 2 dual subs= $60 1000 watt pyramid amp= $50 prefab box= $45 nice cheap bass= priceless

0 of 0 found this helpful

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malone

vulcan MI

Overall
Durability
Value
Features
Design
Usability

they suck

December 21, 2011

I bought one just to blow. I hooked it up to the dual 400 watt amp didnt even get it turned half way up and it seazed up my kicker 10 hit harder then these 12s.

0 of 0 found this helpful

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Accessory Tools and Products

Accessories added

Single 12" Subwoofer Angled Truck or Hatchback Box Enclosure

CARB Compliant, 5/8" MDF Shallow Sub Enclosure Lined with Polyfil.

Your Price $34.99

Single 12" Sealed MDF Subwoofer Enclosure

12-inch Sealed Car Sub Box Made with 3/4" MDF and lined w/ Polyfil.

Your Price $34.99

Single 12" Ported Enclosure Custom Black Baffle

Gold Binding post terminals and a high quality 5/8" MDF construction.

Your Price $59.99

25 ft. of Streetwires 12 Gauge Speaker Cable

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

Your Price $44.95

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

Dynamat Sound Dampening Trunk Kit

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

Your Price $109.95

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 $69.99

12 oz. Can of Adhesive Spray

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

Your Price $6.99

Spring Post Terminal Cup

Makes adding a spring post terminal to an enclosure simple! Banana clip ready!

Your Price $3.99

40" x 15 Ft Piece of Premium Un-Backed Automotive Trim Carpet

Durable design for long life-span, available in many colors and shades.

Your Price $39.99

Gold Plated Dual Terminal Banana Plug Connector

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

Your Price $3.99

Car Stereo and Speaker Installation Tool Kit

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

Your Price $12.99

Xscorpion 9-Piece Nylon Plastic Pry and Chisel Tool Set

Easily removes dash/trims, door clips, panels and pins, rubber grommets and vehicle emblems.

Your Price $14.99

Cordless Multi-Functional Heat Tool Soldering Iron Kit

Continuous working lock allows you to work without holding down trigger.

Your Price $79.99

4 Ft of 1/4" Thick Black Heat Shrink Tubing

Provides abrasion resistance and added protection for your cables.

Your Price $3.99

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

1mm All Purpose Solder

Solder is all purpose for use on most projects where solder is needed.

Your Price $8.99

12" Protective Waffle Subwoofer Grille

Keep your subwoofer looking amazing while keeping it safe.

Your Price $4.99

Scosche SPL Meter

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

Your Price $21.99

AutoSound 2000 CD-101

Low frequency test CD

Your Price $11.99

Impedance Meter / Signal Generator

Easy to locate tuning frequencies of passive radiators and ported enclosures

Your Price $299.99

1 Dual SD12 Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Dual SD12 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

3 Dual SD12 Subwoofers

4 Channel Amp

4 Dual SD12 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Product Summary

Manufacturer

Model Number

SD12

UPC

827204210857

Weight

8.35lbs

Internal SKU

sd12

Internal Product ID

35905

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: Dual SD12