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Alpine S-W12D4

S-Series 12" subwoofer with dual 4-ohm voice coils

Item # 500SW12D4

To create great bass, you need the best in materials and engineering.

To create great bass, you need the best in materials and engineering.

California customers:
Please click here for your Proposition 65 warning.

Top seller

Item # 500SW12D4

In stock
$149.95 each

About the Alpine S-W12D4

Great bass in less space

To create great bass, you need the best in materials and engineering. Alpine's S-Series subwoofers apply technology from their higher end subs to bring you the depth and punch that'll make your tunes come alive. And to make things even better, these subs are about an inch shallower than their predecessors, making them great candidates for locations where regular high-power subs won't fit.

Great bass in less space

Alpine Authorized Online Dealer

To create great bass, you need the best in materials and engineering. Alpine's S-Series subwoofers apply technology from their higher end subs to bring you the depth and punch that'll make your tunes come alive. And to make things even better, these subs are about an inch shallower than their predecessors, making them great candidates for locations where regular high-power subs won't fit.

Advanced materials

The S-W12D4 12" sub can handle up to 600 watts RMS, so you can drive it hard without any worries. The tough Kevlar® treated cone stays rigid under pressure, while its rubber High Amplitude Multi-Roll (HAMR) surround enables maximum excursion for impressive performance. Its dual 4-ohm voice coils allow for extra wiring flexibility, which helps if you plan on adding another subwoofer down the line. Also, it rocks in both sealed and ported boxes, so you can choose an enclosure that suits your tastes.

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Product highlights:

  • 12" subwoofer with dual 4-ohm voice coils
  • Kevlar reinforced pulp cone with HAMR Santoprene rubber surround
  • frequency response: 26-200 Hz
  • power handling: 600 watts RMS (300 watts per coil)
  • peak power: 1,800 watts
  • top-mount depth: 5-1/16"
  • grille not included
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # S-W12D4

What's in the box:

  • One 12" Dual 4-ohm voice coil subwoofer
  • 1 Rubber concealing ring (installed)
  • Two 3" jumper cables (each has a single banana connector on each end)
  • Subwoofer Application Guide (English/ French)
  • On-line product registration information (English/ French/ Spanish)
  • Warranty information (English/ French)
  • Important Notice! (English/ French)

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Alpine S-W12D4 reviews

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More details on the Alpine S-W12D4

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Product Research

Features
Enclosure Compatibility

Features

Kevlar Reinforced Pulp Cone: This Alpine S-Series subwoofer uses a parabolic cone structure, with a Kevlar reinforced pulp cone and a Poly-Mica-Talc dust cap. Kevlar adds strength and tear resistance to the woofer cone while maintaining the benefits of a pulp cone material. The oversized, inverted dust cap increases rigidity and virtually eliminates cone distortion at extreme volume levels.

HAMRS: The woofer features a High Amplitude Multi Roll Surround (HAMRS) that allows a large linear excursion and greater SPL. The HAMRS design allows extreme excursions without sacrificing valuable cone area.

Progressive Spider: The progressive spider has reinforced layer tinsel leads to ensure reliable and consistent control of the tinsel leads and eliminate any mechanical noise or interference often seen in high excursion cone designs.

Compound Radius Curve Pole Geometry: Alpine's Patented Compound Radius Curve extended pole geometry ensures a symmetrical magnetic field, while optimizing flux density to reduce distortion and further improve power handling and output.

Dual Voice Coils: For system flexibility, the woofer has two 4Ω voice coils. When the voice coils are wired in parallel, the woofer presents a 2Ω load. When the voice coils are wired in series, the woofer presents an 8Ω load.

Spring Terminals: The spring post terminals are all located on one side of the woofer. The terminals will accept pin connectors, single banana plugs, or bare wire up to 8 gauge.

Jumpers: Included with the woofer are two voice coil terminal jumpers. These jumpers allow you to easily wire the voice coils in parallel (for a 2Ω load) or series (for an 8Ω load).

Enclosure Compatibility

Sealed Box: Alpine recommends a sealed enclosure with an internal volume between 0.61 and 1.06 cubic feet, with an ideal volume of 0.85 cubic feet. Sealed enclosures provide the most control over a woofer, will handle a lot of power, and provide accurate sonic reproduction, making them suitable to all types of music.

Ported Box Volume: The recommended ported box volume ranges from 1.06 cubic feet to 1.56 cubic feet, with the ideal size being 1.51 cubic feet, using a slot port measuring 12-1/2" (W) x 1" (H) x 16" (L).

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Customer Q&A

5 questions already asked

Q
I need to put these speakers in a ported box with 1.25 cubic ft of air space, how will that sound?
[ Austin  Sep 16, 2020 ]
1 answer
A
Any enclosure that's ported almost doubles the bass output. If your looking for more booming bass, then ported is the way to go. Just stick to the manufacturer's box dimensions and port dimensions.
[ Shane  Sep 16, 2020 ]
Q
sounds great, but I got the grille cover and found that it was very difficult to attach to the speaker. After much cajoling I got it attached all the way around but it wants to come off with the sound of the driving down the road... any good fixes out there?
[ Jordan  Jun 02, 2020 ]
1 answer
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer.
[ Krissy  Jun 17, 2020 ]  Staff
Q
What amplifier could I use to wire two Alpine S-W12D4 12 inch subwoofers to 1 ohm with?
[ Mattyp  Mar 31, 2020 ]
1 answer
A
I used a Single Rockford Fosgate R1200-1D for 2 of these in my 05 Silverado look my up on IG:Dzy_Duramax Subs slammed in a sealed box. Handled anything I threw at it.
[ Daniel  Mar 31, 2020 ]
Q
Can you fit this in a single cab truck?
[ Jimmy  Jan 16, 2020 ]
2 answers
A
Any sub could fit just need the right box made to fit
[ Erik  Jan 20, 2020 ]
A
Depends on the enclosure you choose.
[ Dustin  Jan 16, 2020 ]
Q
4 OHM TO 2 OHM WHAT CAN IT HANDLE?
[ CLARK  Oct 20, 2019 ]
1 answer
A
The power handling of that Alpine S-W12D4 is 600 watts RMS (300 watts per coil). If you have just one of them you will likely be wiring it in parallel to 2 ohms. If you have two subs you would wire them to either 1 ohm or 4 ohm - depending on your amp.
[ Cosmo  Oct 28, 2019 ]  Staff
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