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Mobile Electronics› Vehicle Audio and Components

Alpine

15-Inch Dual 4-Ohm Car Subwoofer

$229.99 $199.99 Save $30.00

SKU: SWS-15D4

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Special Order
Ships in 4–6 weeks
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$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Alpine SWS-15D4 is a 15-inch car subwoofer designed for robust audio performance. It features a dual 4-ohm impedance and handles 500 watts RMS power with a peak of 1000 watts. The subwoofer utilizes a Kevlar reinforced cone and a HAMR performance surround for durability and enhanced sound.

Additional specifications include a progressive spider for consistent control and a dual-sided CRC motor structure. The frequency response ranges from 24 Hz to 200 Hz, with a resonance frequency (Fs) of 27 Hz. The mounting depth is 7 inches, and the cutout diameter is 347 mm.
Show original supplier description
The Alpine SWS-15D4 is a 15-inch Type-S series car subwoofer engineered to deliver powerful bass. This subwoofer boasts a 500-watt RMS power handling capacity and can reach up to 1000 watts at peak power. Its dual 4-ohm voice coils offer flexibility in system configuration. Key technical specifications include a sensitivity of 89 dB and a frequency response from 24 Hz to 200 Hz. The FEA optimized dual-sided CRC motor structure, progressive spider, and a 2.5-inch voice coil contribute to its reliable and consistent audio output. The mounting information indicates a cutout diameter of 347 mm and a mounting depth of 177 mm (7 inches). The SWS-15D4 is listed as discontinued but was sold individually as brand new. It is compatible with various enclosure types, including sealed, vented, and specific band-pass designs (BP4, BP6P).

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandAlpine
Part NumberSWS-15D4
CategoryMobile Electronics
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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