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Alpine SWR-T12-R/B

12" Single 4 ohm Shallow Mount Type-R Series Car Subwoofer

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• Peak Power: 1,200 Watts
• RMS Power: 600 Watts
• Aluminum Woofer Cone
• Santoprene Rubber Surround
• Cast Aluminum Frame
• Radial Finned Heat Sink
• Special Spider Design

Learn more about the LS-swrt12-RB

We apologize

This item has been discontinued

Product Highlights


• Peak Power: 1,200 Watts
• RMS Power: 600 Watts
• Aluminum Woofer Cone
• Santoprene Rubber Surround
• Cast Aluminum Frame
• Radial Finned Heat Sink
• Special Spider Design

Description


Alpine brand icon

Authorized dealer

Item Condition - Refurbished:

A manufacturer refurbished product will function like new with all parts inspected or replaced as necessary. There may be slight cosmetic issues such as scratches or similar. See the description for additional details.

Product Features:

  • 12" Single 4 Ohm Type-R Shallow-Mount Subwoofer
  • Power Handling:
    • Peak: 1800 watts
    • RMS: 300-600 watts
  • Impedance: 4 Ohm
  • Aluminum woofer cone
  • Injection Molded Santoprene rubber surround
  • High-Amplitude Multi-Roll (HAMR) suspension results in the highest X-max and SPL output in its category
  • Thin design allows for installation in compact areas
  • FEA-Optimization allows for maximum linearity, greatly reduces distortion, and improves power handling and output
  • Vented voice coil heat sink, and airflow management system keeps subwoofer cool, while reducing distortion
  • 4" diameter single layer edge-wound ribbon wire voice coil
  • Unique spider and pass-through gap design, provide over 50mm of peak-to-peak excursion
  • Neodymium 35SH magnet structure
  • Frequency response: 26-200 Hz
  • Sensitivity: 84dB
  • 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.

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Alpine SWR-T12-R/B Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Alpine SWR-T12-R/B Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Alpine SWR-T12-R/B Subwoofers

4 Channel Amp

Wiring Guide to Wire 4 Alpine SWR-T12-R/B Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Specifications & Details


Subwoofer Specifications
Series
Type-R Series
Subwoofer Size
12"
Peak Power Handling
1200 watts
RMS Power Handling
600 watts
Voice Coil(s)
Single
Impedance (Per Voice Coil)
4 ohm
Frequency Response
26 - 200 Hz
Sensitivity
84 dB
Xmax (millimeters)
15 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Aluminum
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
0.40 cubic feet
Maximum Sealed Box Volume
0.75 cubic feet
Minimum Ported Box Volume
1.0 cubic feet
Maximum Ported Box Volume
1.5 cubic feet
Top-Mount Depth (Mounting Depth)
3-1/2"
Cutout Diameter
10-15/16"
Shallow Mount Installation
Yes
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Item Details


Manufacturer:

Model Number:

SWR-T12-3

Weight:

15.50lbs

Internal SKU:

LS-swrt12-RB

Internal Product ID:

77921

Product and How-to Videos


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

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