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Alpine SWE-12S4-Open Box

12" Single 4-Ohm Type-E Series Car Subwoofer

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• 750W Peak
• 250W RMS
• Single 4-Ohm Voice Coil
• Woven Fiber w/ Kevlar Reinforced Pulp cone
• Santoprene Woofer Surround

Learn more about the LS-swe12s4-OB

We apologize

This item has been discontinued

Product Highlights


• 750W Peak
• 250W RMS
• Single 4-Ohm Voice Coil
• Woven Fiber w/ Kevlar Reinforced Pulp cone
• Santoprene Woofer Surround

Description


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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.

Save BIG With This Open Box Model!

Limited Time Offer While Supplies Last!


Genetically Built Like A Type-R

The new Type-E’s highly efficient design can play both louder and lower, and is more durable than its predecessor. With a shallow mounting depth, these subs can be installed just about anywhere, but they look so good, you won't want to hide them.

The Type-E cones are built with a reinforced parabolic cone structure and lightweight poly mica dust cap, enabling a faster snappy dynamic response. The high excursion Santoprene® H.A.M.R. surround allows for impressive linear excursion so Type-E subs play louder, and lower!

What is unique and amazing about the new Type-E subwoofer is not only the engineering behind the build, it's the new requirements for them to optimally perform. The new Type-E 12” specification requires 0.65 – 1.0 cubic feet air space for superior performance. That’s 35% less air space used in your vehicle!

General Features:

  • 12" Single 4-Ohm Type-E Series Car Subwoofer
  • Power Handling:
    • Peak: 750 watts
    • RMS: 250 watts
  • Impedance: Single 4 ohm
  • Woven Fiber w/ Kevlar Reinforced Pulp cone
  • Santoprene Woofer Surround
  • Custom High Strength Steel Basket
  • Progressive Nomex Spider
  • 2.6" 3-Layer Single Voice Coil
  • FEA Optimized Design w/ Compound Radii
  • Frequency response: 28-200 Hz
  • Resonance Frequency (Fs): 36 Hz
  • Top-mount depth: 5"
  • Sensitivity: 87.9dB
  • 1-year SonicElectronix.com Warranty

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Alpine SWE-12S4-Open Box Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Alpine SWE-12S4-Open Box Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Alpine SWE-12S4-Open Box Subwoofers

4 Channel Amp

Wiring Guide to Wire 4 Alpine SWE-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
Type-E 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
2.6"
Frequency Response
28 - 200 Hz
Sensitivity
87.9 dB
Xmax (millimeters)
10 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Woven Kevlar and Glass Fiber Composite
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
1.5 cubic feet
Top-Mount Depth (Mounting Depth)
5"
Cutout Diameter
10-9/16"
Shallow Mount Installation
No
T/S Parameters (Electromechanical)
Free-Air Resonance (Fs)
36 Hz
Equivalent Compliance (Vas)
52 liters
Total Speaker Q Value (Qts)
0.59
Electrical Q Value (Qes)
0.64
Electrical Resistance of Voice Coil (Re)
3.6 ohm
Mechanical Q Value (Qms)
7.48
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Item Details


Manufacturer:

Model Number:

SWE-12S4-OB

Weight:

14.00lbs

Internal SKU:

LS-swe12s4-OB

Internal Product ID:

75678

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
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  • 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.