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Alpine SWS-12D2 Open Box

12" Dual 2-Ohm Type S Car Subwoofer

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• 12" Type-S Series Subwoofer
• Dual 2-Ohm Voice Coil
• 1500W Max
• 500W RMS
• Kevlar Treated Pulp Cone
• Durable HAMR Santoprene™ Surround

Learn more about the LS-sws12d2-OB

We apologize

This item has been discontinued

Product Highlights


• 12" Type-S Series Subwoofer
• Dual 2-Ohm Voice Coil
• 1500W Max
• 500W RMS
• Kevlar Treated Pulp Cone
• Durable HAMR Santoprene™ Surround

Description


Alpine brand icon

Authorized dealer

Item Condition - Open Box, Great:

This product works like new, is well-cared-for and in great condition. May show limited signs of wear or use and may be missing non-essential parts, accessories or original packaging.

General Features:

  • 12" Dual 2-Ohm Type-S Series Car Subwoofer
  • Power Handling:
    • Peak: 1500 watts
    • RMS: 500 watts
  • Impedance: Dual 2 ohm
  • Kevlar treated pulp cone
  • Durable HAMR Santoprene™ surround
  • High strength steel frame
  • Progressive conex
  • 2.6" 5-Layer High-Temp Voice Coil
  • 64oz. Strontanium Ferrite magnet motor structure
  • Frequency response: 26-200 Hz
  • Resonance Frequency (Fs): 34Hz
  • Top-mount depth: 5-7/8"
  • Sensitivity: 86.4dB
  • CEA-2031 compliant
  • 90-Day Sonic Electronix Warranty

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Alpine SWS-12D2 Open Box Subwoofer

Mono Amp

Mono Amp - Option 1

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Alpine SWS-12D2 Open Box Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Alpine SWS-12D2 Open Box Subwoofers

Mono Amp

Mono Amp - Option 1

4 Channel Amp

Wiring Guide to Wire 4 Alpine SWS-12D2 Open Box Subwoofers

2 Channel Amp

4 Channel Amp

Specifications & Details


Subwoofer Specifications
Series
Type-S Series
Subwoofer Size
12"
Peak Power Handling
1500 watts
RMS Power Handling
500 watts
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
2 ohm
Voice Coil Diameter
2.6"
Frequency Response
26 - 200 Hz
Sensitivity
86.4 dB
Xmax (millimeters)
15 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Kevlar Reinforced Pulp Paper
Woofer Surround
Santoprene Rubber
Magnet Structure
Single Stacked
Subwoofer Grille
No
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
1.0 cubic feet
Minimum Ported Box Volume
1.0 cubic feet
Maximum Ported Box Volume
1.50 cubic feet
Top-Mount Depth (Mounting Depth)
5-7/8"
Cutout Diameter
10-9/16"
Shallow Mount Installation
No
T/S Parameters (Electromechanical)
Free-Air Resonance (Fs)
34 Hz
Equivalent Compliance (Vas)
44 liters
Total Speaker Q Value (Qts)
0.61
Electrical Q Value (Qes)
0.66
Electrical Resistance of Voice Coil (Re)
3.6 ohm
Mechanical Q Value (Qms)
8.37
Warranty and Return Policy
Parts Warranty Duration
90 days
Labor Warranty Duration
90 days
Warranty Provider
Sonic Electronix

Item Details


Manufacturer:

Model Number:

SWS-12D2-OB

Weight:

15.00lbs

Internal SKU:

LS-sws12d2-OB

Internal Product ID:

73043

Product and How-to Videos


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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.