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Alpine SWX-1243D

12" Dual 4 ohm Type-X Series Car Subwoofer

Alpine
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• 1000W RMS
• 3000W Peak
• Injection Molded Santoprene® Surround
• Kevlar-Rohacell® Woofer Composition
• Dual 3.1" Voice Coil

Learn more about the swx1243d

Good news and a little bad...

This item has been discontinued

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

alp-xw12d4 thumbnail

Alpine X-W12D4

OUR PRICE: $649.95

View item

Product Highlights


• 1000W RMS
• 3000W Peak
• Injection Molded Santoprene® Surround
• Kevlar-Rohacell® Woofer Composition
• Dual 3.1" Voice Coil

Description


Alpine brand icon

Authorized dealer

Product Features:

  • 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 X-W12D4 thumbnail
(newest, current model)
Alpine SWX-1243D thumbnail
(previous model, replaced by Alpine X-W12D4)
Alpine SWX-1242D thumbnail
(previous model, replaced by Alpine SWX-1243D)

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Alpine SWX-1243D Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Alpine SWX-1243D Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Alpine SWX-1243D Subwoofers

Mono Amp

4 Channel Amp

Wiring Guide to Wire 4 Alpine SWX-1243D Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Specifications & Details


Subwoofer Specifications
Series
Type-X Series
Subwoofer Size
12"
Peak Power Handling
3000 watts
RMS Power Handling
1000 watts
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
4 ohms
Frequency Response
24 - 200 Hz
Sensitivity
84 dB
Xmax (millimeters)
19 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
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
.65 cubic feet
Maximum Sealed Box Volume
1.25 cubic feet
Minimum Ported Box Volume
1.00 cubic feet
Maximum Ported Box Volume
2.00 cubic feet
Shallow Mount Installation
No
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Item Details


Manufacturer:

Model Number:

SWX-1243D

Weight:

37.00lbs

Internal SKU:

swx1243d

Internal Product ID:

9265

Product and How-to Videos


Customer Ratings & Reviews



5 star
88%
4 star
10%
3 star
1%
2 star
1%
1 star
0%



Durability
4.9
Value
4.7
Features
4.8
Design
4.9
Usability
4.8

Customer Reviews

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Alpine's Top of the Line

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.

By Ian on July 24, 2011

25

found this helpful.

Great sub

Amazing sub, hits way better than my old type r and the sq is awesome. Great shipping from sonic for sure.

By Jerrod on March 16, 2014

21

found this helpful.

Terrific As Always

As a returning customer, it doesn't surprise me that my sub was shipped with care and on time. The prices that sonic offers are also the best you will find. Now the sub, I replaced my Alpine Type R 12 (also purchased from here) with this 12 inch Type X and the difference in both sound quality and projection is amazing. I have never been let down by any products made by Alpine. The Type R sounded really good, but this Type X in a custom made ported box sounds awesome. The kind of bass you can really feel in and out of my truck, and the gain on my alpine Mrx-m100 is turned only halfway up. Once again thanks for the great service.

By Ryan on March 30, 2014

18

found this helpful.

Boom Boom Bass

If you bass in ya face then this is for you. Boom Boom, Boom Boom, Boom Boom.

By BassInYaFace on January 3, 2014

18

found this helpful.

Great sub!!

man i love this sub!!!! i just have one in my car powered by the power acoustik A3000DB and it hits!!!!

By Alex on February 9, 2009

17

found this helpful.

GEEEZZZZ

I just hooked one of these up in my 01 prelude at a 2ohm load running about 2000 to it and it freaking slams...I was just used to my Rockford p3 at 800 watts...This sub is very loud..my favorite sub I have owned so far... I have had SWS's and SWR's and my Rockford p3 and I had a w7 that got stolen and I still like the type x way better than the w7. And I paid twice the amount for the w7...

By Gregory on February 2, 2009

16

found this helpful.

love it!!!!

Love this sub. Sounds great and for the price it can't be beat. I have it in a 2.0 cubic feet box and it vibrates my whole truck. Thinking of getting another one!!!

By shane on March 18, 2014

16

found this helpful.

Excellent subwoofer!

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.

By Andy on February 6, 2012

15

found this helpful.

gods gift for a perfect system

I own 1 of these and hooked it up to my jbl amp which is 1000 watts rms at 2 ohms. this is exceptional because the type x sub is also 1000 watts rms at 2 ohms. I have it in my 2005 mustang gt and i feel like either my brain will melt or my throat will vibrate to pieces. this sub is so clear and so hard hitting it is ridiculous. the low bass is so deep it is unbelievable. i have it in a 2 cubic foot box and it is at 155 db don't believe me well buy one and prove me wrong. this 1 12 inch sub hits harder and is louder then my previous 2 15 inch subs combine. my grandfather was in his house 1/4 mile away with the air conditioner on and a radio playing and still he could feel and hear the 12 inch type x subwoofer bumping the country. yes i said country music. when i play hip hop music such as the song "a millie" well forget about it i might as well take my trunk and rip it off lol. will my warranty for the sub cover my trunk haha. I definitely give this sub a perfect score. BUY THIS SUB ASAP AND BE AMAZED.

By Kevin W on October 3, 2009

15

found this helpful.

Awesome Bass!

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.

By Dean on November 3, 2010

15

found this helpful.

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