Garage
Shop

See all parts that fit your 1978 Wagoneer

Alpine S-W12D4 Subwoofer + Belva 3000W BXD3K Amplifier + 4 Gauge Amp Kit

1800W Max 12" Dual 4 Ohm Subwoofer Package (Includes Sub, Amp, and Amp Kit)

Alpine
Shop all Alpine
highlight-star-icon

• 1800 Watts Max
• 600 Watts RMS
• Pulp/Kevlar Cone
• High Amplitude Multi-Roll (HAMR) Surround
• High Strength Steel Frame Basket
• Progressive Spider with Reinforced Layer Tinsel Leads
• 65 mm Voice Coil with High-Temp 5-Layer DVC Winding on AL Former

Learn more about the sw12d4_bxd3k_bak42

We apologize

This item has been discontinued


Loading...
Club 522F main

JBL Club 522F (SPKCB522FAM)

270W Peak (90W RMS) 5.25" Club Series 2 Way Coaxial 3-ohm Speakers

-42.29%

$74.99

List price $129.95

Reference 5030cx main

Infinity Reference 5030cx (REF5030CX)

390W Peak (130W RMS) 5.25" Reference Series 2-Way 3-ohm Component Speaker System

2
-60.01%

$99.95

List price $249.95

REF507CF main

Infinity REF507CF (INFSPKRF507CFUS)

390W Peak (130W RMS) 5.25" Reference Series 2-Way 3-ohm Component Speaker System

-12.00%

$219.95

List price $249.95

DMDX5 main

Diamond Audio DMDX5

240W Peak (80W RMS) 5" DMD Series 2-Way Cocentric Coaxial 4-ohm Speakers

DSK 130.3 main

Hertz DSK 130.3

240W Peak (120W RMS) 5.25” Dieci Series 2-way 4-ohm Component Speaker System

-13.05%

$199.99

List price $230.00

DB5252 main

Polk Audio DB5252 (DB 5252)

600W Peak (200W RMS) 5.25” DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

4

$200.00

List price $209.99

Limited time!
THUNDER51 main

MTX Audio THUNDER51

360W Peak (180W RMS) 5.25" Thunder Series 2-way 4-ohm Component Speakers System

1
-16.67%

$199.96

List price $239.95

43DSC504 main

Kicker DSC50 (43DSC504)

400W Peak (100W RMS) 5.25" DS Series 2-way 4-ohm Coaxial Car Speakers (DSC504)

17
-11.77%

$74.99

List price $84.99

Limited time!
46CSC54 main

Kicker CSC5 (46CSC54)

450W Peak (150W RMS) 5.25” CS Series 2 Way Coaxial 4-ohm Speakers

5
-33.36%

$79.96

List price $119.99

VSP525KIT main

NVX VSP525KIT

750W Peak (250W RMS) 5.25" V-Series 2 Way Component Car Speakers

27
-16.67%

$99.99

List price $119.99

Description


Alpine brand icon

Authorized dealer

General Features:

  • 12" 4 Ohm Type-S Series Subwoofer
  • Power Handling:
    • Peak: 1800 watts
    • RMS: 600 watts
  • Recommended power range: 250- 600W RMS
  • Pulp/Kevlar Cone
  • High Amplitude Multi-Roll (HAMR) Surround
  • Progressive Spider with Reinforced Layer Tinsel Leads
  • Airflow Optimized Dual Flare Pole Vent
  • High Strength Steel Frame Basket
  • 8 AWG Push Terminals with VC Configuration Jumpers
  • Dual Voice Coil
  • High Grade Strontium Ferrite Magnets
  • Top-mount depth: 5-1/16"
  • Cutout diameter: 10-9"
  • Frequency Response: 26- 200Hz
  • Sensitivity: 86.4dB
  • Resonance Frequency (Fs): 31 Hz
  • Authorized Internet Dealer
  • 1-year Sonic Electronix Warranty
  • Priced Individually

Product history:

Alpine S-W12D4, BXD3K, BAK42BK thumbnail
(newest, current model)
Alpine SWS-12D4 thumbnail
(previous model, replaced by Alpine S-W12D4 Subwoofer + Belva 3000W BXD3K Amplifier + 4 Gauge Amp Kit)
Alpine SWS-1243D thumbnail
(previous model, replaced by Alpine Type-S SWS-12D4)
Alpine SWS-1242D thumbnail
(previous model, replaced by Alpine SWS-1243D)
Alpine SWS-1241D thumbnail
(previous model, replaced by Alpine SWS-1242D)

Best selling similar products

NPKG212 small

NVX NPKG212 Dual 12" Bass Package

• 12" Loaded Dual Subwoofer Enclosure with Amplifier
• 500 watts RMS
• Class D Amplifier
• Variable Bass Boost
• Speaker-Level Inputs
• Wired Remote Bass Level Control

(11)

$374.99

List price $419.99

MB210SP small

MTX Audio Magnum MB210SP

• 10" Amplified Loaded Subwoofer System
• 400 watts RMS
• Built-In Class D amplifier
• Variable bass boost
• Speaker-level inputs

(65)

$269.95

List price $299.95

Specifications & Details


Subwoofer Specifications
Series
Type-S Series
Subwoofer Size
12"
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
4 ohm
RMS Power Handling
600 watts
Peak Power Handling
1800 watts
Woofer Surround
High Roll Foam
Minimum Sealed Box Volume
0.55 cubic feet
Maximum Sealed Box Volume
1 cubic feet
Minimum Ported Box Volume
1.0 cubic feet
Maximum Ported Box Volume
1.5 cubic feet
Sensitivity
86.4 dB
Frequency Response
24 - 200 Hz
Xmax (millimeters)
15 mm
Top-Mount Depth (Mounting Depth)
5-1/16"
Cutout Diameter
10-9/16"
Recommended Enclosure Type
Ported / Vented
Sealed
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Item Details


Manufacturer:

Model Number:

S-W12D4, BXD3K, BAK42BK

Weight:

24.19lbs

Internal SKU:

sw12d4_bxd3k_bak42

Internal Product ID:

193013

Customer Ratings & Reviews


Alpine S-W12D4 Subwoofer + Belva 3000W BXD3K Amplifier + 4 Gauge Amp Kit thumbnail image

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



Durability
0
Value
0
Features
0
Design
0
Usability
0

Customer Reviews

Sort by:

Loading...
Sorry, no reviews found

Related Searches


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

1978 Jeep Wagoneer

1982 Datsun 200SX

2023 Kia Forte

2009 Chevrolet Aveo5

2025 Mazda CX-5

2009 Porsche Cayman

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.