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Alpine SWR-1243D

12" Dual 4 ohm Type-R Series Car Subwoofer

  • 4.8

(76 reviews)

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The product on this page is discontinued, but there is a newer model available:
Newer Model: Alpine SWR-12D4
Alpine SWR-12D4 thumbnail
$169.99 In Stock

Specials with this product

  • Free Ground Shipping to the 48 statesdetails

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New and Improved Alpine Type-R:

Delivering the best bass output, the Alpine SWR-1243D has been redesigned to enhance audio playback and become your ideal sound system. Type-R's new depth design offers a 20% reduction while adding the new and improved magnet structure. With this updated double-stacked strontium magnet, this product gains over 20% more motor force to provide a louder, cleaner bass. The optimized CRC machined motor creates an even magnetic field to provide the user with less distortion and overall improves the subwoofers power handling. This subwoofer features a High-Amplitude Multi Roll (HAMR) to provide excellent excursion with overall better output. Having a new and improved airflow management system controlling the temperature of the voice coils, the air is redirected across the heatsink to avoid overheating. With heavy playing time, this heatsink feature minimizes the amount of compression to reduce any heat damage to the voice coils giving you a long-lasting subwoofer.

  • 12" Dual 4 ohm Type R Subwoofer
  • Power Handling:
    • Peak: 1800 watts
    • RMS: 300-600 watts
  • Kevlar reinforced pulp cone woofer
  • 2-Piece Structural Parabolic diaphragm design
  • Injection molded Santoprene rubber surround
  • Alpine exclusive High Amplitude Multi-Roll (H.A.M.R) surround for impressive excursion and clean, accurate bass
  • FEA Optimized progressive NOMEX spider
  • Radial vented VC head sink
  • Concealed mount gasket system
  • Reinforced layer spider integration tinsel leads
  • Oversized 2-1/2" Voice coil
  • 4-Layer dual voice coil design
  • Voice coil made from 180°C high temperature wire on spiral cut aluminum former
  • Single-piece cast aluminum frame with Alpine Patent Pending Airflow Management System for efficient cooling
  • Airflow Management system controls the temperature of the voice coil by directing the air across the heatsink
  • One sided push terminals make installation and wiring fast and simple
  • Each terminal accepts up to 8 AWG wire for high power signal transfer
  • Concealed gasket mounting system hides the screw holes and makes for a clean install
  • Integrated grill technology allows for a seamless installation of a grill
  • US Patented Compound Radius Curve (CRC) design with integrated short sleeve configuration
  • CRC Machined motor structure creates a symmetrical magnetic field for less distortion and improves power handling
  • High-power, double-stacked strontium magnet structure
  • Newly redesigned for a 20% depth reduction
  • Frequency response: 24-200 Hz
  • Sensitivity: 83 dB
  • 1-year Sonic Electronix 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 SWR-12D4 thumbnail
(newest, current model)
Alpine SWR-1243D thumbnail
(previous model, replaced by Alpine SWR-12D4 )
Alpine SWR-1242D thumbnail
(previous model, replaced by Alpine SWR-1243D)
Subwoofer Specifications
Subwoofer Series Type-R
Subwoofer Size 12"
Peak Power Handling 1800 watts
RMS Power Handling 600 watts
Voice Coil(s) Dual
Impedance (Per Voice Coil) 4 ohms
Frequency Response 24 - 200 Hz
Sensitivity 85 dB
Xmax (millimeters) 20 mm
Subwoofer Design Round / Circle
Main Cone Color Dark Gray
Woofer Composition Kevlar Fiber
Woofer Surround Santoprene Rubber
Subwoofer Grille Optional (Accessory required and sold separately)
Re-Cone Kit Available No
Recommended Enclosure Specifications
Recommended Enclosure Type Ported / Vented
Sealed
Minimum Sealed Box Volume 0.65 cubic feet
Maximum Sealed Box Volume 1.25 cubic feet
Minimum Ported Box Volume 1.0 cubic feet
Maximum Ported Box Volume 2.0 cubic feet
Top-Mount Depth 6-3/8"
Cutout Diameter 10-13/16"
Shallow Mount Installation No
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration 1 year
Labor Warranty Duration 1 year
Warranty Provider Sonic Electronix
Customer Review Summary for Alpine SWR-1243D
Average Customer Rating is 4.8 out of 5 stars:
  • 4.8
based on 76 Reviews
Share your thoughts with others:
Rating Distribution:
5 star:
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86%
4 star:
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13%
3 star:
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0%
2 star:
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1%
1 star:
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0%
what's this?
Average Attributes Rating:
Durability
  • 4.8
4.8
Value
  • 4.8
4.8
Features
  • 4.8
4.8
Design
  • 4.8
4.8
Usability
  • 4.9
4.9
what's this?
Quick Comparison:
Most Helpful Customer Reviews:
August 3, 2010 Amazing Subs for the price
4 of 4 people found the following review helpful:
Review by
Andrew from Stittsville, ON, Canada
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
I had a hard time deciding if I should have gotten 2 or just 1. I ended up only getting 1 Alpine Type-R sub and this thing blasts! I'm running it off the Rockford R500 amp and it's perfect. So happy with my purchase.
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January 3, 2012 Bass in the place London!!
2 of 2 people found the following review helpful:
Review by
Mocape from London, Great Britain
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
Don't bother looking anywhere else. Just click and buy. This sub is mental, an it keeps on going and going, giving birth to hard, deep and tight Bass! Im only running 400w rms on it in a sealed enclosure and my neighbors hate me. Can't wait for summer time in London! If you want to be that guy cruising with loud bass, then this is your tool to make it happen. WE LOVE BASS!
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April 15, 2011 High output, Good sound quality
2 of 2 people found the following review helpful:
Review by
Aztekk from Tucson, AZ
Overall
  • 5.0
Durability
  • 4.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
I wanted a sub with high output and good SQ at a low price, after doing a lot of research, I decided on this woofer. I tossed it into a 1 cubic foot sized sealed box as recommended by Alpine for SQ (I mainly listen to rock music). I juiced it with an RF bdCP 1000, 900 watts at 4ohm.



I used to own 2 RF 12's powered by the first model Bd1000. This single 12 hits at least 70% as hard and has better sound quality.



I bought one more of these, and I'm thinking of sending it back, a single one is so loud. ( I will probably keep the extra one and hook it up)



I havent tried wiring this sub at 2ohms (My amp gives 1500 Watts at 2ohms) But I would imagine it would probably sound even better.



This sub sounds good for rock and rap, but for some reason, it makes techno and dance music sound great. It feels just as bulletproof as it looks in the pictures.
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July 5, 2010 Awesome
2 of 2 people found the following review helpful:
Review by
demetrius from Key West, FL
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
I love these subs. I installed these and ran each one off its own amp. I'm only giving each one 500w but these things bang.
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June 3, 2010 Awesome subs
2 of 2 people found the following review helpful:
Review by
Terry from woodruff, SC
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
Put them in this afternoon and they bang hard
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View All 76 Reviews for Alpine SWR-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!
  Product Price Add?
Sealed Subwoofer Enclosure Sealed Subwoofer Enclosure
Single sealed 12" hatchback enclosure made from 3/4" MDF construction and covered in gray carpet.
$39.99
Sealed Subwoofer Enclosure Sealed Subwoofer Enclosure
Single sealed 12" subwoofer enclosure made from 3/4" MDF construction and covered in black carpet.
$39.99
Sealed Subwoofer Enclosure Sealed Subwoofer Enclosure
Dual sealed 12" enclosure made from 3/4" MDF construction and covered in gray carpet.
$69.95
Ported Subwoofer Enclosure Ported Subwoofer Enclosure
Single 12" ported/vented enclosure carpeted black and made with solid 3/4" MDF.
$54.99
Ported Subwoofer Enclosure Ported Subwoofer Enclosure
Single 12" ported/vented enclosure carpeted black and made with solid 3/4" MDF.
$69.95
Ported Subwoofer Enclosure Ported Subwoofer Enclosure
Dual 12" ported/vented enclosure carpeted gray and made with solid 3/4" MDF.
$79.99
Subwoofer Grilles
Protect your subwoofer while making your enclosure look great! These subwoofer grilles are the perfect addition to your new subwoofer.
  Product Price Add?
12" Universal Subwoofer Grille 12" Universal Subwoofer Grille
Protect your subwoofer with this aluminum grille that is simple to install.
$18.99
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.
  Product Price Add?
15 ft. of 12 AWG StreetWires Speaker Wire 15 ft. of 12 AWG StreetWires Speaker Wire
This SuperCable from StreetWires is a noise free link between your amplifier and your subwoofer.
$24.99
20 ft. of 12 AWG Kicker Speaker Wire 20 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.
$34.95
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.
  Product Price Add?
Dynamat Rubber Roller Dynamat Rubber Roller
Install your Dynamat with ease! This heavy duty rubber roller is designed specifically to install your Dynamat!
$18.99
Dynamat Extreme Bulk Pack Dynamat Extreme Bulk Pack
36 ft. Dynamat Xtreme Bulk Pack enhances the sound for your entire car!
$159.99
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!
  Product Price Add?
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.
$159.99
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!
  Product Price Add?
20 oz. Bag of Poly-Fil 20 oz. Bag of Poly-Fil
Polyester fiber fiberfill adds better bass to your system.
$5.99
16 oz. Can of Adhesive Spray 16 oz. Can of Adhesive Spray
Spray adhesive used for adhering carpet to subwoofer boxes without bubbles.
$6.99
Binding Post Terminal Cup Binding Post Terminal Cup
Use this to easily install a binding post terminal to your subwoofer enclosure.
$4.99
Banana Clip Terminals Banana Clip Terminals
These high grade banana clips allow you to plug into your banana clip ready terminal for a secure connection.
$4.99
Installation, Tools & Accessories
Don't forget to get the tools and accessories that will help you install your new subwoofer in your vehicle. Whether you opt for the professional installation card or the do-it-yourself method, you will need the following to help you out!
  Product Price Add?
Car Stereo and Speaker / Subwoofer Installation Tool Kit Car Stereo and Speaker / Subwoofer Installation Tool Kit
Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.
$14.99
System Optimization and Tuning
Use these items to assist in testing and tuning your new car audio system to perfection!
  Product Price Add?
Scosche SPL Meter Scosche SPL Meter
Monitor the noise level of your new car audio system with this SPL meter measuring from 60-135 dB.
$24.99
AutoSound 2000 CD-101 AutoSound 2000 CD-101
Low frequency test CD
$12.99
AutoSound 2000 CD-102 AutoSound 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-103 AutoSound 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-1243D
Product manual: Download the Alpine SWR-1243D Product Manual
UPC: 793276601537
Weight: 27.00 lbs
Internal SKU: swr1243d
Internal product ID: 24187