Garage
Shop

See all parts that fit your 2019 3500

Alpine SWX-1242D

12" Dual 4 ohm Type-X Series Car Subwoofer

Alpine
Shop all Alpine
Product videos
highlight-star-icon

Dual 4-ohm voice coils • carbon fiber/aluminum honeycomb cone • Santoprene rubber surround • 100-1,000 watts RMS power range • 20-500 Hz frequency response

Learn more about the swx1242d

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
NVX - Worth the Envy - Direct to Consumer Car Audio

Loading...
72-6514 main

Metra 72-6514

Install New Speakers in select 1999-2026 vehicles from Dodge, Ram, Jeep

70
-37.52%

$9.99

List price $15.99

72-7902 main

Metra 72-7902

Install New Speakers in select 1990-2024 vehicles from Ram, Dodge, Jeep

20
-28.59%

$9.99

List price $13.99

MP69 main

DS18 MP69

Adapts 6x9" Speaker Space to 6.5" Speaker and 1.38" Tweeter

2
Limited time!
Kappa 693M main

Infinity Kappa 693M (INFSPKKA693MAM)

720W Peak (240W RMS) 6x9” Kappa Series 3 Way Coaxial 3-ohm Speakers

14
-31.43%

$239.95

List price $349.95

Limited time!
40PS692 main

Kicker PS692 (40PS692)

360W Peak (180W RMS) 6x9” PS Series 2 Way Coaxial 2-ohm Powersports and Motorcycle Speakers

-27.29%

$159.96

List price $219.99

EPICPRO6X main

AudioControl EPICPRO6X

600W Peak (400W RMS) 6.5" Epic Pro Series Pro Audio Midrange 4-ohm Speakers

1

Product Highlights


Dual 4-ohm voice coils • carbon fiber/aluminum honeycomb cone • Santoprene rubber surround • 100-1,000 watts RMS power range • 20-500 Hz frequency response

Description


Alpine brand icon

Authorized dealer

  • 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 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-1242D Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Alpine SWX-1242D 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-1242D Subwoofers

Mono Amp

4 Channel Amp

Wiring Guide to Wire 4 Alpine SWX-1242D Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp


Loading...
51KRDL7T102 main

Kicker KRDL7T10 (51KRDL7T102)

1000W RMS Loaded Dual 10" Sealed Truck Enclosure for select 2002-2024 vehicles from Ram, Dodge

1
-10.53%

$849.99

List price $949.99

51KTDL7T102 main

Kicker 51KTDL7T102

1000W RMS Loaded Dual 10" Sealed Truck Enclosure for select 2011-2024 vehicles from Ram

-10.53%

$849.99

List price $949.99

SB-D-QDRAMD/10TW1 main

JL Audio Stealthbox® SB-D-QDRAMD/10TW1

Custom fit subwoofer enclosure for select 2002-2024 vehicles from Ram, Dodge

3

$1,699.99

SB-D-QDRAM/10W3v3 main

JL Audio Stealthbox® SB-D-QDRAM/10W3v3 (Open Box, Like New)

Custom fit subwoofer enclosure for select 2002-2024 vehicles from Ram, Dodge

1

$1,249.99

51K5RDL7T102 main

Kicker 51K5RDL7T102

1000W RMS Loaded Dual 10" Sealed Truck Enclosure for select 2002-2024 vehicles from Ram, Dodge

-10.53%

$849.99

List price $949.99

51KR_46CXA_RCT_XK42_NK_49K main

Kicker KRDL7T10 Sub Enclosure + CXA1200.1 Amp + Remote w/ Free Amp Install Kit

1000W RMS Dual 10" Sealed Truck Enclosure, 1200W RMS Class D Monoblock Amp, Wired Bass Remote, 4 Gauge OFC Amp Kit, and 2 Koozies

158
-18.40%

$1,290.01

List price $1580.93

51KTDL7_NDA15_XK42_NK_49K main

Kicker 51KTDL7T102 + NVX NDA15001 w/ Free Amp Install Kit

1000W RMS Loaded Dual 10" Sealed Truck Enclosure with 1500W RMS Class D Monoblock Car Amplifier, 4 Gauge OFC Wiring Kit, and Koozies

137
-24.94%

$1,050.02

List price $1398.94

51KRDL_NDA15_XK42_NK_KK main

Kicker KRDL7T10 Subwoofer Enclosure + NVX NDA15001 Amp w/ Free Amp Install Kit

1000W RMS Loaded Dual 10 inch Sealed Truck Enclosure, 1500W RMS Class D Monoblock Amplifier with Bass Remote, 4 Gauge OFC Wiring Kit and Koozies

138
-24.94%

$1,050.02

List price $1398.94

51L7T_CXA12_ARCT_XK42_NK_KK main

Kicker 51KTDL7T102 Enclosure + CXA1200.1 Amp w/ Free Amp Install Kit

Kicker 1000W RMS Loaded Dual 10" Sealed Truck Enclosure, 1200W RMS Monoblock Amp, Bass Remote, NVX 4-Gauge OFC Wiring Kit, and Koozies

157
-18.40%

$1,290.01

List price $1580.93

51K5_CXA12_CXAR_XK42_NK_49K main

Kicker 51K5RDL7T102 + CXA1200.1 Amp + Bass Knob w/ Free Amp Install Kit

1000W RMS Loaded Dual 10" Sealed Truck Enclosure with 1200W RMS Monoblock Amplifier, Bass Remote, 4 Gauge OFC Wiring Kit, and Koozies

157
-18.40%

$1,290.01

List price $1580.93


Best selling similar products

Marine Club 12 small

JBL CB122 Club Marine 12

• Peak Power: 1200 watts
• RMS Power: 400 watts
• Polypropylene Cone
• Rubber Surround
• Impedance: Single 4 ohm
• Mount depth: 7-13/16"
• Sensitivity: 89 dB

(1)

$119.95

List price $379.95

VCW124v3 small

NVX VCW124 Version 3 (VCW124v3)

• Peak Power: 2400 watts
• RMS Power: 1200 watts
• Impedance: Dual 4 ohm
• Carbon Fiber Enhanced Non-Pressed Paper Cone
• Custom High Roll Foam Surround with black nylon stitching
• Mount depth: 7.02"
• Sensitivity: 85 dB (1W/1m)

(132)

$239.99

List price $287.99

SQW124 small

NVX SQW124

• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 3.51"
• Sensitivity: 84 dB

$299.99

List price $359.99

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 ohm
Frequency Response
23 - 200 Hz
Sensitivity
83 dB
Woofer Surround
Santoprene Rubber
Recommended Enclosure Specifications
Top-Mount Depth (Mounting Depth)
8-11/16"
Cutout Diameter
10-7/8"
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Item Details


Manufacturer:

Model Number:

SWX-1242D

Weight:

37.00lbs

Internal SKU:

swx1242d

Internal Product ID:

2444

Product and How-to Videos


Customer Ratings & Reviews


Alpine SWX-1242D thumbnail image

5 star
87%
4 star
11%
3 star
1%
2 star
1%
1 star
0%



Durability
4.9
Value
4.7
Features
4.8
Design
4.8
Usability
4.8

Customer Reviews

Sort by:

Loading...

Alpine's Top of the Line

The following review is for SWX-1243D, which is a part of the bundle you are viewing.

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

The following review is for SWX-1243D, which is a part of the bundle you are viewing.

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

The following review is for SWX-1243D, which is a part of the bundle you are viewing.

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

The following review is for SWX-1243D, which is a part of the bundle you are viewing.

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!!

The following review is for SWX-1243D, which is a part of the bundle you are viewing.

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

The following review is for SWX-1243D, which is a part of the bundle you are viewing.

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!!!!

The following review is for SWX-1243D, which is a part of the bundle you are viewing.

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!

The following review is for SWX-1243D, which is a part of the bundle you are viewing.

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

The following review is for SWX-1243D, which is a part of the bundle you are viewing.

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!

The following review is for SWX-1243D, which is a part of the bundle you are viewing.

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




ZRX1816.1D small

Hifonics Zeus ZRX1816.1D

1800 Watt Monoblock Zeus Series Class D 1-Ohm Stable Subwoofer Amplifier - (Zeus 1800 Watt)

(37)

$159.99

List price $379.99

XAH125.4 small

Cadence XaH125.4 (Orange)

1000W, Xenith Series Class A/B 4-Channel Amplifier with Orange Chassis

$269.95

List price $339.95

MXDM70 small

Dual MXDM70

Marine CD Receiver with Weatherband Radio and AM/FM Tuner

(2)

$139.99

List price $199.99

T1650-S small

Rockford Fosgate Power T1 T1650-S

320W Peak (160W RMS) 6.5" Power Series 2 Way Component 4-ohm Speaker System

(1)

$379.99

List price $379.99

ZXX-2000.4 PCX30F BAK42 small

Hifonics Zeus ZXX-2000.4 2000w RMS 4-Channel Car Amplifier+Amp Kit+Capacitor

2000W Peak Zeus Series Class-A/B 4-Channel 2-Ohm Stable Amplifier (ZXX-20004) Package

(114)

$354.90

List price $698.98

XAH125.4B small

Cadence XaH125.4b (Black)

1000W, Xenith Series Class A/B 4-Channel Amplifier with Black Chassis

$269.95

List price $339.95

ZXX-2000.4 small

Hifonics ZXX-2000.4

2000W Peak Zeus Series Class-A/B 4-Channel 2-Ohm Stable Amplifier (ZXX-20004)

(17)

$179.95

List price $449.00

AX-TYAMP1,ToyK985,KW-M750BT small

JVC KW-M740BT Double Din Car Media Player Install Kit Apple CarPlay Android Auto

JVC KW-M740BT Double Din Car Media Player Install Kit Apple CarPlay Android Auto

(8)

$595.91

List price $693.94

RPK4-HD1101,KW-M750BT small

JVC KW-M740BT Double Din Car Media Player Install Kit Apple CarPlay Android Auto

JVC KW-M740BT Double Din Car Media Player Install Kit Apple CarPlay Android Auto

(7)

$928.95

List price $1248.95

Related Searches


Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

2019 Ram 3500

1974 Ford Thunderbird

1983 Buick Skylark

2006 BMW X3

1993 Buick Century

1972 Mazda Mizer

1986 Jeep Comanche

2019 Jeep Renegade

2006 Jaguar X-Type

2018 Dodge Ram ProMaster 3500

Vehicle
Store
Delete

2000 Harley Davidson FLTR Road Glide

2023 Harley Davidson FLHT Electra Glide Standard

Vehicle
Store
Delete

2021 Can-Am Defender XT HD8

2022 Can-Am Defender MAX HD9 XT

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.