Alpine S2-W12D2

1800W Peak (600W RMS) 12" S-Series Dual 2-ohm Car Subwoofer

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• Peak Power: 1800 watts
• RMS Power: 600 watts
• Impedance: Dual 2 ohms
• Polypropylene Cone
• Rubber Surround
• Mount depth: 4.89"
• Sensitivity: 85.7 dB

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Alpine S2-W12D2

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$219 95


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Product Details:

  • 12" Dual 2 ohms S Series Subwoofer
  • Power Handling:
    • Peak: 1800 watts
    • RMS: 600 watts
  • Polypropylene Cone
  • Rubber Surround
  • Redesigned for powerful and reliable bass
  • High Amplitude Multi-Roll (HAMR) Rubber Surround
  • 2.6" High Temperature Copper Voice coil
  • 15 mm Xmax
  • 64 oz. Single Stacked Ferrite magnet motor structure
  • Frequency Response: 23 - 215 Hz
  • Resonance Frequency (Fs): 26.6 Hz
  • Sensitivity: 85.7 dB
  • Recommended sealed box volume: 0.55 cubic feet - 1 cubic feet
  • Recommended ported box volume: 1 cubic feet - 1.5 cubic feet
  • Top-mount depth: 4.89"
  • Cutout diameter: 10.64"
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

  • Priced Individually

Product history:

Alpine S2-W12D2 thumbnail
(newest, current model)
Alpine S-W12D2 thumbnail
(previous model, replaced by Alpine S2-W12D2)
Alpine SWS-12D2 thumbnail
(previous model, replaced by Alpine S-W12D2)
Alpine SWS-1223D thumbnail
(previous model, replaced by Alpine Type-S SWS-12D2)
Alpine SWS-1222D thumbnail
(previous model, replaced by Alpine SWS-1223D)

Subwoofer Wiring Guide

Wiring Guide to Wire 1 Alpine S2-W12D2 Subwoofer

Mono Amp

Mono Amp - Option 1

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Alpine S2-W12D2 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Alpine S2-W12D2 Subwoofers

Mono Amp

Mono Amp - Option 1

4 Channel Amp

Wiring Guide to Wire 4 Alpine S2-W12D2 Subwoofers

2 Channel Amp

4 Channel Amp

Specifications & Details

Subwoofer Specifications
S Series
Subwoofer Size
Peak Power Handling
1800 watts
RMS Power Handling
600 watts
Voice Coil(s)
Impedance (Per Voice Coil)
2 ohms
Voice Coil Material
Voice Coil Diameter
Frequency Response
23 - 215 Hz
85.7 dB
Xmax (millimeters)
15 mm
Subwoofer Design
Round / Circle
Main Cone Color
Dark Gray
Woofer Composition
Woofer Surround
Magnet Structure
Single Stacked
Magnet weight
64 oz.
Magnet Type
Subwoofer Grille
Re-Cone Kit Available
CTA-2031 Compliant
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Minimum Sealed Box Volume
0.55 cubic feet
Optimum Sealed Box Volume
0.85 cubic feet
Maximum Sealed Box Volume
1 cubic feet
Minimum Ported Box Volume
1 cubic feet
Maximum Ported Box Volume
1.5 cubic feet
Top-Mount Depth (Mounting Depth)
Cutout Diameter
Shallow Mount Installation
Electromechanical Parameters
Free-Air Resonance (Fs)
26.6 Hz
Equivalent Compliance (Vas)
55.1 liters
Total Speaker Q Value (Qts)
Electrical Q Value (Qes)
Electrical Resistance of Voice Coil (Re)
1.8 ohms
Mechanical Q Value (Qms)
What is in the box?
User manual
Warranty/Registration card
WITB: Subwoofers
Mounting screws (4)
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Item Details


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Customer Ratings & Reviews

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Customer Reviews

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Sincerely a good subwoofer

I have been in the market to add a subwoofer to my car audio and wanted to make sure that I had something with a crisp and accurate sound, while giving punchy bass that didn’t blow my trunk off. Alpine has been a good brand that I have used in the past, so I took the risk of buying this newly released 12” dual 2 ohm subwoofer. It’s wired to 4 ohms with my audioque aq3500.1d amp and it sounds amazing. I’m still breaking it in, but the difference is immediately noticed compared to having my Bose speakers alone. This is such an accurate sub and even having just one in a sealed 0.93 cubic foot box brings a lot of punch. When I can fully unleash this thing, it might be too loud even! If you’re wondering if this is enough bass, I can promise you that it is. Great space saver for my trunk and I compare this experience to having a soundbar for your tv - you don’t know how much better it can sound until you hear it yourself. I’ll most likely never go back to stock in a car with this amazing combo.

By Maxwell on February 16, 2024 Checkmark Icon Verified purchase


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