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Alpine SWR-1242D

12" Dual 4 ohm Type-R Series Car Subwoofer

4.8

(181 reviews)

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The product on this page is discontinued, but there is a newer model available:
Newer Model: Alpine SWR-1243D
swr1243d thumbnail
$149.95In Stock

Specials with this product

  • Free Ground Shipping to the 48 statesdetails
Alpine Type R Subwoofers

These incredible subwoofers from Alpine have withstood the test of time and proven themselves to be one of the top subwoofer choices for car audio enthusiasts. The Type R subwoofers are designed and engineered for big bass, as well as a durable sub that will last for many years to come. These woofers use a pulp cone that is reinforced with Kelvar for an incredibly durable and rigid structure. The ribbed multi-roll santoprene surround is designed for excellent response, while assisting in smoother cone movement and excursion. The subwoofer will stay cool under extended hard playing with the unique thermal management system that Alpine designed into the Type R Subwoofer. The tinsel leads are hidden and woven into the dual Nomex spiders for a strong and unbreakable connection. For those looking for an industry standard subwoofer with break-taking bass, consider the Alpine Type-R subwoofer.

  • 12" Dual 4 Ohm Type R Series Subwoofer
  • Power Handling:
    • Peak: 1500 watts
    • RMS: 500 watts
  • Impedance: Dual 4 ohms
  • Parabolic Kevlar reinforced pulp fiber cone woofer
  • High Amplitude Multi-Roll (HAMR) Santoprene surround
  • HAMR Surround integrates a concealed mount gasket for Alpint Type-R grille
  • Custom Cast Aluminum Frame with Integrated Perimeter Venting and Heat Transfer Plate
  • Cast aluminum perimeter vented heat transfer frame
  • Compound Radius Curve (CRC) Motor structure
  • Spiral cut aluminum former with high temperature DVC Winding
  • Radial Vented VC Heat sink and Airflow Management System
  • Mirrored progressive Nomex Spiders with reinforced layer integrated tinsel leads
  • Insert push terminals with one-sided layout
  • One-sided terminal layout
  • 1-year SonicElectronix.com warranty

Read more about the Alpine SWR-1242D in our blog!

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 SWR-1243D thumbnail
(newest, current model)
Alpine SWR-1242D thumbnail
(previous model, replaced by Alpine SWR-1243D)
Subwoofer Specifications
Subwoofer SeriesType-R
Subwoofer Size12"
Peak Power Handling1500 watts
RMS Power Handling500 watts
Voice Coil(s)Dual
Impedance (Per Voice Coil)4 ohms
Frequency Response23 - 500 Hz
Sensitivity85 dB
Xmax (millimeters)18.2 mm
Subwoofer DesignRound / Circle
Main Cone ColorDark Gray
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 Volume0.57 cubic feet
Maximum Sealed Box Volume1.0 cubic feet
Minimum Ported Box Volume0.75 cubic feet
Maximum Ported Box Volume2.0 cubic feet
Top-Mount Depth7-3/4"
Cutout Diameter11"
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 SWR-1242D
Average Customer Rating is 4.8 out of 5 stars:
4.8
based on 181 Reviews
Share your thoughts with others:
Rating Distribution:
5 star:
.
.
85%
4 star:
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.
13%
3 star:
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2%
2 star:
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0%
1 star:
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0%
what's this?
Average Attributes Rating:
Durability
4.9
Value
4.9
Features
4.8
Design
4.8
Usability
4.9
what's this?
Quick Comparison:
Most Helpful Customer Reviews:
September 19, 2011 Great Sub
1 of 1 people found the following review helpful:
Review by
Marquis from Salters, SC
Overall
Durability
Value
Features
Design
Usability
I've Had this sub for a year and its been great so far no problems to speak of. About to get a second one cant wait.
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April 22, 2010 Greatest Investment Ever.
1 of 1 people found the following review helpful:
Review by
DJ After Hours from Phoenix, AZ
Overall
Durability
Value
Features
Design
Usability
OMG! Ive been in the car audio game for two years. Over the years ive had everything from cheap to expensive, one to four subs, ported sealed all of that... Finally decided play with the big boys and get nothing but the best.

Super Duper Bass. I have just one in a ported box paired with the Rockford Fosgate Prime R500-1. Perfect Combination. If U Only Want One Get This Pair! Wont B Disappointed.
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November 7, 2011 sound was never meant to be seen!!
Review by
Mubiana from lusaka, Zambia
Overall
Durability
Value
Features
Design
Usability
I have had this speaker for a year now with no problems. Truly it hits harder!!
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September 18, 2011 Loud
Review by
CM% from Omaha,NE
Overall
Durability
Value
Features
Design
Usability
I have one of these in a vented enclosure and it bumps so hard!
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August 1, 2011 Alpine all the way
Review by
cesar from las vegas, NV
Overall
Durability
Value
Features
Design
Usability
This is the second subwoofer i have owned (previously had Polk DB) and im happy i got these. I'm running one type r off a kenwood 1800 amp at 4 ohms pushing 500 rms in a ported box. I love how it can take a beating playing for hours. I have had this for over a year and a half now and no complaints! Makes my pontiac g5 2009 rattle!!
Sonic has the best price and the best customer service... and dont forget FREE shipping and fast !
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View All 181 Reviews for Alpine SWR-1242D
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
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

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

Product Summary

Manufacturer: Alpine
Model number: SWR-1242D
UPC: 793276620781
Weight: 27.00 lbs
Internal SKU: swr1242d
Internal product ID: 4281
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Customer Testimonial

I was very pleased with the value and customer service i received from Sonic Electronix. I would definitely consider using them again in the future.

- Dan from Oakland

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