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Alpine SWX-1242D

12" Dual 4 ohm Type-X Series Car Subwoofer

Discontinued
|

Good news and a little bad...

This item has been discontinued

But you may be interested in the newest model that's available.

swx1243d thumbnail

Alpine SWX-1243D

OUR PRICE: $289.95

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  • carbon fiber/aluminum honeycomb cone
  • high-roll Santoprene rubber surround
  • cast aluminum frame
  • dual 4-ohm voice coils
  • frequency response 23-200 Hz
  • power range 500-1,000 watts RMS (500 watts per coil)
  • peak power handling 3,000 watts
  • sensitivity 83 dB
  • top-mount depth 8-11/16"
  • sealed box volume: 0.65-1.25 cubic feet
  • ported box volume: 1.0-2.0 cubic feet

Product History:

Alpine SWX-1243D thumbnail
(newest, current model)
Alpine SWX-1242D thumbnail
(previous model, replaced by Alpine SWX-1243D)

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
Type-X (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.
3000 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.
1000 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
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).
23 - 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".
83 dB
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

Recommended Enclosure Specifications

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.
8-11/16"
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.
10-7/8"

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
81%
4 Star
19%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.8
Value
4.8
Features
4.9
Design
4.8
Usability
4.9

Tim

Brownsville, TN

Overall
Durability
Value
Features
Design
Usability

T.B

July 21, 2010

Great sub! good sound quality and lots of bass

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Tim

Brownsville, TN

Overall
Durability
Value
Features
Design
Usability

T.B

July 21, 2010

Great sub! good sound quality and lots of bass

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keith

lenox, MA

Overall
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Value
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Usability

great subwoofer

March 3, 2007

this subwoofer is one of the best I have heard. My old subs (audiobahns) could not even compete with the sound and looks of the type X. Great sub a little expensive but well worth it.

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toua

Erie, CO

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Value
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Usability

one of the best subs

March 3, 2007

i really recommend this sub to anyone who wants hard hitting bass this sub will knock your breath out of you i hit so hard. i had put two of these in my 1996 acura integra and with the trunk block with the back seat it had still knock my breath out and flex my front windsheild best sub ever heard in its price range.

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Benjamin

S. Pasadena , FL

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Value
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Usability

wow

March 2, 2007

this just plain rattles my eyeballs, get the right box and amp setup, and you wont be sorry,. well worth the investment

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Lenny

silver spring, MD

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Usability

this sub is amazing

February 27, 2007

I paired it with the alpine mrd-6oo, only 600 watts and this thing bumps. very clean sound, very loud. definatley put this monster in a ported box.

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Bryan

Mchenry, IL

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Value
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Usability

Good Deal

February 26, 2007

This sub is worth every penny you spend on it from Sonic Electronix. I was using my buddy's 800 RMS Audiobahn amp to push it and with certain songs it would literally hurt our ears and vibrate our hair. This amp pounds. The only problem I had was giving my buddy his amp back and hooking mine back up, which is only 300 rms. I didn't expect it to, but it barely pushes it... so it isn't really worth buying if you're not going to buy an amp that at least almost matches the amount of power this sub can handle.

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jennifer

Susquehanna, PA

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Value
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Usability

Best Buy

March 16, 2006

I have one of these powered by a jl audio 500/1 and it bumps hard. VERY HARD. I highly recommend this subwoofer. Dont be scared by the price its well worth it. And sonicelectronix sells them at the cheapest price around....

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marty

groton, CT

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Value
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Usability

best subs in the world

February 25, 2006

these subs are awe inspiring i have 2 hooked up to my 2500d orion amplifier putting 1250 watts to each sub and it handles the wattage like a champion it has great sound quality with its tight hitting bass but it still gets surpizingly loud so i recommend this product to anybody that can afford them the best subs for any ammount of money they have the quality of 13w7 with the loudness of a kicker solo x

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Geoffrey

Tampa, FL

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Value
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Usability

This Subs Sounds Spectacular

February 20, 2006

I put this subwoofer into my 85 Iroc-Z Camaro and powered it with an Infinity 1210a, and it sounds great. The bass reponse is smooth and it hits the low notes with gusto. As far as sound quality, the bass sounds as though it is actually coming from my 5.25 inch drivers in the dash and all the bass lines are clear. I highly recommend this sub.

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Matthew

Cut Bank, MT

Overall
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Value
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Usability

hella bass

December 5, 2005

Ok so I bought 2 of these bad boys, with an Alpine MRD-M1005 running to each one. When i first fired it up, i had to turn it down because my ears hurt so bad. I've rattled the back of my car apart practically. I would love to make few more upgrades and put my stereo in a car w/o a trunk, to really feel the power of it. I get quite a few compliments, and my mom always tells me to turn it down when my deck is at 5 out of 35 notches and my sub level at 0. This site doesn't cover these subs very well warranty wise, but you won't find them cheaper anywhere else. HIGHLY RECOMMENDED!!!

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Jesse

Cortland, OH

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BooM

October 10, 2005

madd subs...put these babys in and all i feel in my car now is one hell of a massage...with a great amp these babys bump to hell...alpine is great quality with that extra edge of power

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James

Fredericksburg, VA

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Nova Motors Inc.

September 14, 2005

We love these subs. We put 2 in a 2005 Dodge Magnum. These are highly reccomended, they hit harder than anything i have installed, they are high quality products from alpine and a very great price.

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Adrian

Holbrook, NY

Overall
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Value
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Usability

crazy subs

May 19, 2005

these are some of the craziest subs I have ever owned. This company at the time was out so i had to order the product on back order. But with their exellent customer support it wasent a hassle at all. Just remeber though if you buy one of these babies break them in. Dont just start blastin the sub the minuet its installed, they will blow. If you break them in they will have a long life and you will be wakin up the neighboors 3 blocks down every night.

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Brett

Carrollton, GA

Overall
Durability
Value
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Usability

Awesome Package

March 16, 2005

The Type X is a sub mainly built for sound quality over loudness. If you are into quality i would definetly recommend this sub, but dont get be wrong... with the new HAMR surround it can definetly be loud with plenty of excursion.

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Mac

San Diego, CA

Overall
Durability
Value
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Design
Usability

Type X subs are AMAZING

March 14, 2005

Alpine is one of the greatest car audio companies of all time, and these are the final installment to alpines high-quality type-x line. To start off and say these subs are amazing is an understatement, they are just rediclous! The first time i heard the type R's i was blown away by the sound quality and SPL of those, and these are so much better. These are the best subs alpine has ever made, and some of the best subs made period. Their worth every penny.

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Accessory Tools and Products

Accessories added

NVX 20 ft. of True Spec 8 Gauge Speaker Wire

Flexible multi-strand cable bends and twists to meet your installation needs.

Your Price $49.99

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

Dynamat Sound Dampening Bulk Kit

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

Your Price $151.95

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 $109.99

Gold Plated Dual Terminal Banana Plug Connector

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

Your Price $4.99

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

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

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 Alpine SWX-1242D Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Alpine SWX-1242D Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

3 Alpine SWX-1242D Subwoofers

Mono Amp

4 Channel Amp

4 Alpine SWX-1242D Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Product Summary

Manufacturer

Model Number

SWX-1242D

Weight

37.00lbs

Internal SKU

swx1242d

Internal Product ID

2444

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 SWX-1242D