Skip Navigation

Alpine SWS-15D4

Type-S 15" subwoofer with dual 4-ohm voice coils

5 Reviews

Add to Cart

Alpine SWS-15D4

Overview

Our take on the Alpine SWS-15D4

You can tell that Alpine's bass pedigree runs deep in their latest line of Type-S subwoofers. Using technology found in their higher end subs, this sub will rock your system and add depth to your favorite tracks. You'll love the detail it brings to a bass guitar and the impact you'll feel when a kick drum hits. Throw a couple of these in your ride and prepare to be amazed by unrelenting bass.

Bring on the bass

Alpine Authorized Online Dealer

You can tell that Alpine's bass pedigree runs deep in their latest line of Type-S subwoofers. Using technology found in their higher end subs, this sub will rock your system and add depth to your favorite tracks. You'll love the detail it brings to a bass guitar and the impact you'll feel when a kick drum hits. Throw a couple of these in your ride and prepare to be amazed by unrelenting bass.

Side view of SWS-15D4 subwoofer

Advanced materials

The SWS-15D4 can handle up to 500 watts of RMS power, so you can drive it hard and it'll keep up. The tough 15" Kevlar® treated cone stays rigid under pressure, while its rubber HAMRS surround allows for maximum excursion. Its dual 4-ohm voice coils allow for 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.

Note: If you are wiring this DVC sub for lower impedance, make sure that your amp is compatible.

To drive this single subwoofer, we recommend a mono amplifier rated between 375 and 750 watts RMS at 2 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.

Note: Sorry, Crutchfield cannot ship Alpine products to Guam or Puerto Rico.

Great sub, plenty loud and hits deep. I have it powered by an Infinity Reference sub at 2 ohms and 650W. It came with a free box, which was nice.

Austin T., Albany, NY

What's in the Box:

  • One 15" Dual 4-ohm voice coil subwoofer
  • 1 Rubber concealing ring (installed)
  • Two 3" jumper cables (each has a single banana connector on each end)
  • Type-S Subwoofer Application Guide (English/ French)
  • On-line product registration information (English/ French/ Spanish)
  • Warranty information (English/ French)
  • Important Notice! (English/ French)

Product Highlights:

  • 15" subwoofer with dual 4-ohm voice coils
  • Kevlar reinforced pulp cone with HAMRS Santoprene rubber surround
  • frequency response: 24-200 Hz
  • power handling: 150-500 watts RMS (250 watts per coil)
  • peak power: 1,500 watts
  • sensitivity: 88.7 dB
  • top-mount depth: 6-15/16"
  • sealed box volume: 1.32-2.07 cu. ft.
  • ported box volume: 2.07-3.07 cu. ft.
  • warranty: 1 year
  • Our 60-day money-back guarantee
Reviews

Alpine SWS-15D4 Reviews

Average Customer Review:

5 Reviews

thumper

Written by: jeepvwt from Hilliard, OH on July 18, 2016

2010 Jeep Liberty
Crutchfield Customer Review (What's this?)

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

i gave 5 stars on value because I got while they were bogo free ;-) anyway, they sound great, I am only using one now to see how it does solo. I bought the 500 watt mono block amp that alpine makes (500 watts rms @ 2 ohm) and wow does it sound great. Think I may sell the other 15" since I am not going to need it. built my own custom sealed enclosure that nets just over 1.5 cubic feet of volume.

Pros: nice cover ring hides the mounting screws; deep bass; thumper;

Cons: i will have to get back to you on this

Alpine SWS-15D4

Written by: Austin T. from Albany, NY on April 15, 2016

1996 Audi A4
Crutchfield Customer Review (What's this?)

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

Great sub, plenty loud and hits deep. I have it powered by an Infinity Reference sub at 2 ohms and 650W. It came with a free box, which was nice.

Pros: Can be used in a relatively small sealed box, considering it's a 15 inch. Great sound at an affordable price.

Cons: None

Alpine SWS-15D4

Written by: gary from new Holland on April 11, 2016

2015 Chrysler 200
Crutchfield Customer Review (What's this?)

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

I have to rate this mid level subwoofer really good nice sq in the bass bunker sealed box I loved the surround

Pros: Nice power handling handling can be used in a small box.

Cons: None I can think of

Earth Shatterring Sub

Written by: Booya from Vancouver Island, BC on August 31, 2014

Crutchfield Customer Review (What's this?)

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

These subs sounded great immediately following install. My only issue is the finished product doesn't seem Alpine quality to me. There is evidence of glue traces in places and 'spots' on the cone and surround that makes me feel like they came flying off an assembly line and no one really cared to make sure they were mint looking. Other wise, they seem like a great sub so far...ask me again after they've broken in.

Pros: Affordable, easy install, great performance

Cons: unique grill, finish quality

soundzgood

Written by: C.Delapaz from Gary,IN on May 14, 2014

Crutchfield Customer Review (What's this?)

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

SWS-15D4 15" subs THE BEST speakers EVER! sound quality DYNAMIC! you can hear my ride 3 blocks away. I don't only rattle my trunk, I'll rattle the dishes in your kitchen cabinets! no doubt!

Pros: easy to install, vibration unbelievable!

Cons: NONE

Details

Hands-on research

What's in the box?

Download the Alpine SWS-15D4 manual

  • One 15" Dual 4-ohm voice coil subwoofer
  • 1 Rubber concealing ring (installed)
  • Two 3" jumper cables (each has a single banana connector on each end)
  • Type-S Subwoofer Application Guide (English/ French)
  • On-line product registration information (English/ French/ Spanish)
  • Warranty information (English/ French)
  • Important Notice! (English/ French)

Product Research

Features
Enclosure Compatibility

Features

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

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

Progressive Spider: The progressive Conex 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 pole geometry ensures a symmetrical magnetic field, while optimizing flux density to reduce distortion and further improve power handling and output.

Oversized Voice Coil: The oversized (65mm), high-temperature, 6-layer dual voice coils offer power handling up to 500W RMS / 1500W Peak (250 watts RMS per coil).

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

Enclosure Compatibility

Sealed Box: Alpine recommends a sealed enclosure with an internal volume between 1.32 and 2.07 cubic feet, with an ideal volume of 1.34 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 2.07 to 3.07 cubic feet, with the ideal size being 2.67 cubic feet, using a slot port measuring 16" (W) x 1.25" (H) x 21" (L).

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Accessories
Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Use one 4ohm dvc sub and be able to bridge at 2ohm on amp for best results [ THOMAS  Jun 18, 2016 ]
Library