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Alpine SWX-1243D

12" Dual 4 ohm Type-X Series Car Subwoofer

4.8

(67 reviews)

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Specials with this product

  • Free Ground Shipping to the 48 statesdetails
  • 12" Dual 4 Ohm Dual Type-X Series Subwoofer
  • Power Ratings:
    • 3000 watts Peak
    • 1000 watts RMS
  • Impedance: Dual 4 ohm
  • Kevlar-Rohacell® Woofer Composition
  • Injection Molded Santoprene® Surround
  • Dual 3.1" 6-Layer Dual 4 Ohms Voice Coil with Inner/Outer Winding
  • Insert Terminal Blocks with High Current Voice Coil Configuration Jumper
  • Lighter materials minimize moving mass for greater output efficiency than ever before
  • Type-X subs are built with HAMR engineering, Alpine’s exclusive subwoofer solution for cooler operation, longer life and tight accurate bass.
  • 1-year SonicElectronix.com warranty

Alpine products are warranted solely by Sonic Electronix, Inc. under the same period and terms as the original Alpine warranty. Sonic Electronix is not an Authorized Alpine Dealer and Alpine requires all merchandise purchased by Sonic Electronix customers to be returned solely to Sonic Electronix. Alpine products are also covered by our Standard Return Policy for returns on exchanges or refunds within 30 days from the date of purchase.

Product History:
Alpine SWX-1243D thumbnail
(newest, current model)
Alpine SWX-1242D thumbnail
(previous model, replaced by Alpine SWX-1243D)
Subwoofer Specifications
Subwoofer SeriesType-X
Subwoofer Size12"
Peak Power Handling3000 watts
RMS Power Handling1000 watts
Voice Coil(s)Dual
Impedance (Per Voice Coil)4 ohms
Frequency Response24 - 200 Hz
Sensitivity84 dB
Xmax (millimeters)19 mm
Subwoofer DesignRound / Circle
Main Cone ColorBlack
Woofer CompositionKevlar Fiber
Woofer SurroundSantoprene Rubber
Subwoofer GrilleOptional (Accessory required and sold separately)
Re-Cone Kit AvailableNo
Recommended Enclosure Specifications
Recommended Enclosure TypePorted / Vented
Sealed
Minimum Sealed Box Volume.65 cubic feet
Maximum Sealed Box Volume1.25 cubic feet
Minimum Ported Box Volume1.00 cubic feet
Maximum Ported Box Volume2.00 cubic feet
Top-Mount DepthN/A
Cutout DiameterN/A
Shallow Mount InstallationNo
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration1 year
Labor Warranty Duration1 year
Warranty ProviderSonic Electronix
Customer Review Summary for Alpine SWX-1243D
Average Customer Rating is 4.8 out of 5 stars:
4.8
based on 67 Reviews
Share your thoughts with others:
Rating Distribution:
5 star:
.
.
87%
4 star:
.
.
10%
3 star:
.
1%
2 star:
.
1%
1 star:
.
0%
what's this?
Average Attributes Rating:
Durability
4.8
Value
4.7
Features
4.8
Design
4.8
Usability
4.8
what's this?
Quick Comparison:
Most Helpful Customer Reviews:
July 24, 2011 Alpine's Top of the Line
1 of 1 people found the following review helpful:
Review by
Ian from Williamsport, PA
Overall
Durability
Value
Features
Design
Usability
I've had this subwoofer for about 3 weeks now and I must say that this is a great subwoofer. I've only owned a few speakers in my life and this is the best one. I replaced an Alpine Type-R in a ported box with this Type-X in a sealed box and I got the best of both worlds. The Type-R was loud but the sound quality lacked because at higher volumes, transitions between bass notes were slurred. The Type-X in a sealed box gave me the sound quality I was looking for, each bass note is very cleared and crisp, and the lows are unbelievable. I also got the loudness of the Type-R with it. Best of both worlds in my opinion. Now don't get me wrong, the Type-R was louder, but if you're looking for a sound quality oriented subwoofer, loudness is not the first thing to look for, however, the Type-X does get loud. Overall, this will probably be the last subwoofer I buy, and if I do buy another, it'll be a second Type-X. For the price, you can't beat this subwoofer. Period.
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November 3, 2010 Awesome Bass!
1 of 1 people found the following review helpful:
Review by
Dean from CA
Overall
Durability
Value
Features
Design
Usability
I have two 12" Type-X subs ported hooked up with an M-2000. Front type-R component system and 6x9's in the back hooked up with a PDX-400. All Alpine with an Alpine deck. Stinger cables, upgraded alternator and with two upgraded batteries. System bumps for two subs I am pleased. My amp isn't even all the way up. I know people hate on Alpine but I am satisfied. The price on this site are pretty legit because Alpine employee discounts are about the same rate.
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February 6, 2012 Excellent subwoofer!
Review by
Andy from ashland, wi
Overall
Durability
Value
Features
Design
Usability
These subs are amazing. I have them fully powered and they are by far the loudest subs in my area. Also, these subs put out very clean-tight bass. I would highly recommend these subs to a friend. I pound these subs all the time and they haven't skipped a beat.
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December 30, 2011 crazy low bass
Review by
Ron from Berbice, Guyana
Overall
Durability
Value
Features
Design
Usability
This sub is really great, i am playing 1 of this sub with an spl gorilla series 3000 class D amp at 2 ohms and sound great. I'm gonna buy another one. Trust me guys its plays more low bass than the kickers L7 12". For a sub that cost not too much and play really loud get this sub.
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December 6, 2011 SWX-1243D
Review by
billy from warren,ohio
Overall
Durability
Value
Features
Design
Usability
Has grate sound. Durable, and easy to use, I love it.
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View All 67 Reviews for Alpine SWX-1243D
Empty Enclosures
Every subwoofer needs an enclosure to mount in and these high quality boxes are perfect for your new woofer! After a quick installation, you'll be ready for some real bass in your car!
 ProductPriceAdd?
Sealed Subwoofer EnclosureSealed Subwoofer Enclosure
Single sealed 12" hatchback enclosure made from 3/4" MDF construction and covered in gray carpet.
$19.99
Sealed Subwoofer EnclosureSealed Subwoofer Enclosure
Single sealed 12" subwoofer enclosure made from 3/4" MDF construction and covered in black carpet.
$24.99
Sealed Subwoofer EnclosureSealed Subwoofer Enclosure
Dual sealed 12" enclosure made from 3/4" MDF construction and covered in gray carpet.
$24.99
Ported Subwoofer EnclosurePorted Subwoofer Enclosure
Single 12" ported/vented enclosure carpeted black and made with solid 3/4" MDF.
$49.99
Ported Subwoofer EnclosurePorted Subwoofer Enclosure
Single 12" ported/vented enclosure carpeted black and made with solid 3/4" MDF.
$39.99
Ported Subwoofer EnclosurePorted Subwoofer Enclosure
Dual 12" ported/vented enclosure carpeted gray and made with solid 3/4" MDF.
$79.95
Subwoofer Grilles
Protect your subwoofer while making your enclosure look great! These subwoofer grilles are the perfect addition to your new subwoofer.
 ProductPriceAdd?
12" Universal Subwoofer Grille12" Universal Subwoofer Grille
Protect your subwoofer with this aluminum grille that is simple to install.
$9.99
Speaker Wire
Choose from our recommended speaker wire to hook up your amplifier to your new subwoofer. The higher quality of speaker wire that it used for this connection, the better your subwoofer will sound.
 ProductPriceAdd?
24.6 ft. of 10 AWG Monster Cable 400 Series Speaker Wire24.6 ft. of 10 AWG Monster Cable 400 Series Speaker Wire
For the ultimate connection, Monster uses a MultiTwist™ construction, a Magnetic Flux Tube, and even more cutting edge wire technology.
$50.00
15 ft. of 12 AWG StreetWires Speaker Wire15 ft. of 12 AWG StreetWires Speaker Wire
This SuperCable from StreetWires is a noise free link between your amplifier and your subwoofer.
$19.99
20 ft. of 12 AWG Kicker Speaker Wire20 ft. of 12 AWG Kicker Speaker Wire
Kicker uses twisted pair technology and hyper-flex cable to provide you with the cleanest sound and a simple installation.
$24.99
Sound Dampening Material
Get the most sound out of your new subwoofer with some high quality sound dampening material. It will keep the road noise out and the music inside the car.
 ProductPriceAdd?
Dynamat Rubber RollerDynamat Rubber Roller
Install your Dynamat with ease! This heavy duty rubber roller is designed specifically to install your Dynamat!
$18.99
Dynamat Extreme Bulk PackDynamat Extreme Bulk Pack
36 ft. Dynamat Xtreme Bulk Pack enhances the sound for your entire car!
$149.99
Bass Reconstruction Processors
These sound processors are perfect for enhancing the lower frequencies of a car audio system. After some installation and tuning, your new system will sound better than ever!
 ProductPriceAdd?
The Epicenter by AudioControl (Gray)The Epicenter by AudioControl (Gray)
The original bass booster expander with included remote will enhance the bass of your new system.
$149.99
Maxxsonics MX-3Maxxsonics MX-3
Enhances the bass response, increases linearity, buffers unwanted noise, and improves the frequency range of your subwoofer.
$59.99
Enclosure Accessories
These accessories are designed to help you build the custom enclosure that you have always wanted, or add to the box that you already bought. Either way, these products can assist you in achieving better sound, better looks, and more bass!
 ProductPriceAdd?
20 oz. Bag of Poly-Fil20 oz. Bag of Poly-Fil
Polyester fiber fiberfill adds better bass to your system.
$5.99
16 oz. Can of Adhesive Spray16 oz. Can of Adhesive Spray
Spray adhesive used for adhering carpet to subwoofer boxes without bubbles.
$5.99
Spring Post Terminal CupSpring Post Terminal Cup
Makes adding a spring post terminal to an enclosure simple! Banana clip ready!
$2.99
Binding Post Terminal CupBinding Post Terminal Cup
Use this to easily install a binding post terminal to your subwoofer enclosure.
$2.99
Banana Clip TerminalsBanana Clip Terminals
These high grade banana clips allow you to plug into your banana clip ready terminal for a secure connection.
$4.99
System Optimization and Tuning
Use these items to assist in testing and tuning your new car audio system to perfection!
 ProductPriceAdd?
AutoSound 2000 CD-101AutoSound 2000 CD-101
Low frequency test CD
$12.99
AutoSound 2000 CD-102AutoSound 2000 CD-102
High frequency test CD specifically designed for the set-up and evaluation of sound system imaging and placement.
$12.99
AutoSound 2000 CD-103AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components.
$12.99
Main Product
 ProductPriceAdd?
Alpine SWX-1243DAlpine SWX-1243D$279.99

For more information on wiring subwoofers, visit our Subwoofer Wiring Guide: Subwoofer Wiring Guide

Product Summary

Manufacturer: Alpine
Model number: SWX-1243D
UPC: 793276620965
Weight: 37.00 lbs
Internal SKU: swx1243d
Internal product ID: 9265

Price Information

$499.99

–$220.00

$279.99

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Customer Testimonial

Great prices and great service and a really awesome web site too. I will be ordering from her in the future.

- Glenn from Purvis, Ms

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