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  5. 12" Car Subwoofers Closeout
  6. Alpine SWA-12S4-2

See all parts that fit your 2023 Urus

Alpine SWA-12S4-OPEN BOX

250W 12" BASSLINE Single 4 Ohm Subwoofer

Alpine
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• 750W Peak
• 250W RMS
• Single 4 ohm Voice Coil
• Polypropylene & Mica Damped Cone
• High-Excursion Poly-Foam Surround
• High Strength Custom Steel Frame
• 2" Aluminum Steel Frame
• 8 Gauge Push Pin Terminals

Learn more about the LS-swa12s4-OB

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This item has been discontinued

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Product Highlights

• 750W Peak
• 250W RMS
• Single 4 ohm Voice Coil
• Polypropylene & Mica Damped Cone
• High-Excursion Poly-Foam Surround
• High Strength Custom Steel Frame
• 2" Aluminum Steel Frame
• 8 Gauge Push Pin Terminals

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" Single 4 Ohm BASSLINE Series Subwoofer
  • Power Handling:
    • Peak: 750 watts
    • RMS: 250 watts
    • RMS Power Range: 50-250 watts
  • Polypropylene & mica damped cone with Progressive Wavelet Rib (PWR) design
  • High-excursion poly-foam surround
  • Polyester progressive spider
  • Two-piece yoke with vented pole for improved air flow and voice coil cooling
  • High strength custom steel frame
  • 8 Gauge push pin terminals
  • 2" Aluminum voice coil
  • 60 oz. Single stacked magnet
  • Resonance Frequency (Fs): 30 Hz
  • Top-mount depth: 5-1/2"
  • Sensitivity: 87.6 dB
  • 1-year Sonic Electronix Warranty

Subwoofer Wiring Guide

Wiring Guide to Wire 1 Alpine SWA-12S4-OPEN BOX Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Alpine SWA-12S4-OPEN BOX Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Alpine SWA-12S4-OPEN BOX Subwoofers

4 Channel Amp

Wiring Guide to Wire 4 Alpine SWA-12S4-OPEN BOX Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Specifications & Details

Subwoofer Specifications
Series
BassLine Series
Subwoofer Size
12"
Peak Power Handling
750 watts
RMS Power Handling
250 watts
Voice Coil(s)
Single
Impedance (Per Voice Coil)
4 ohm
Voice Coil Diameter
2"
Frequency Response
22 - 200 Hz
Sensitivity
87.6 dB
Xmax (millimeters)
10 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Polypropylene
Woofer Surround
Poly-Foam
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
0.75 cubic feet
Optimum Sealed Box Volume
1.09 cubic feet
Maximum Sealed Box Volume
1.5 cubic feet
Minimum Ported Box Volume
1.5 cubic feet
Optimum Ported Box Volume
1.91 cubic feet
Maximum Ported Box Volume
2.5 cubic feet
Top-Mount Depth (Mounting Depth)
5-1/2"
Cutout Diameter
10-9/16"
Shallow Mount Installation
No
T/S Parameters (Electromechanical)
Free-Air Resonance (Fs)
30 Hz
Equivalent Compliance (Vas)
67.8 liters
Total Speaker Q Value (Qts)
0.49
Electrical Q Value (Qes)
0.53
Electrical Resistance of Voice Coil (Re)
3.6 ohm
Mechanical Q Value (Qms)
7.07
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Item Details

Manufacturer:

Alpine

Model Number:

SWA-12S4-2

Weight:

11.50lbs

Internal SKU:

LS-swa12s4-OB

Internal Product ID:

89811

Product and How-to Videos

Customer Ratings & Reviews

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