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Alpine SWS-15D4

500W Type-S 15" Dual 4-Ohm Subwoofer

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List price $229.95

$119.99

with warranty

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10% Off on the Subwoofer Box!

Save 10% off a 15" sealed subwoofer enclosure with your purchase!

4.50

45527

521

Alpine SWS-15D4

$119.99

+

10% OFF

Single 15" Sealed MDF Subwoofer Enclosure (Belva MDFS15)

$44.99

Special Price $40.49 ($44.99 if purchased separately)

Single 15" Sealed MDF Subwoofer Enclosure (Belva MDFS15)

• 15" Sealed Subwoofer Enclosure
• 3/4" High Quality MDF
• Durable Black Carpeting
• Terminal Cup Installed With Gold Posts
• Internal Box Volume: 1.90 Cubic FT

(Offer 1 of 1)

Combined Total Price

$160.48

You Save $4.50

General Features:

  • 15" Dual 4-Ohm Type-S Series Car Subwoofer
  • Power Handling:
    • Peak: 1000 watts
    • RMS: 500 watts
  • Impedance: Dual 4 ohms
  • Kevlar reinforced cone
  • HAMR performance surround
  • Progressive spider for reliable and consistent control
  • FEA Optimized Dual-Sided CRC Motor Structure
  • CEA-2031 compliant
  • 2.5" Voice Coil
  • 106 oz. magnet motor structure
  • Frequency response: 24-200 Hz
  • Resonance Frequency (Fs): 27 Hz
  • Top-mount depth: 7"
  • 1-year Sonic Electronix Warranty

Alpine products are warranted solely by Sonic Electronix, Inc. under the same period and terms as the original Alpine warranty. Sonic Electronix is not an Authorized Alpine Dealer and Alpine requires all merchandise purchased by Sonic Electronix customers to be returned solely to Sonic Electronix. Alpine products are also covered by our Standard Return Policy for returns on exchanges or refunds within 30 days from the date of purchase.

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
Type-S (Alpine)
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
15"
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
1500 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
500 watts
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Dual
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
4 ohms
Voice Coil Diameter
Diameter of voice coil, usually measured in inches.
2.5"
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
24 - 200 Hz
Xmax (millimeters)
Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
15 mm
Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Round / Circle
Main Cone Color
This is the color of the speaker's or subwoofer's cone.
Black
Blue
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Kevlar Reinforced Pulp (Paper)
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Santoprene Rubber
Magnet Structure
Defines the overall structure of the subwoofers magnet.
Double Stacked
Subwoofer Grille
Most subwoofers are able to accommodate a universal grille; however, some subs include a grille and others have a specific, optional grille available for purchase separately. If "yes", then the subwoofer includes a grille. If "optional (sold separately)" the matching grille will need to be purchased in addition to the sub.
Optional (Accessory required and sold separately)
Re-Cone Kit Available
Some higher end subwoofers have replaceable cone assemblies. In case of a blown woofer, a recone kit allows for a simple replacement, as opposed to purchasing an entire new subwoofer.
No

Recommended Enclosure Specifications

Minimum Sealed Box Volume
This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.25 cubic feet
Maximum Sealed Box Volume
This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
2.0 cubic feet
Minimum Ported Box Volume
This value indicates the minimum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
2.0 cubic feet
Maximum Ported Box Volume
This value indicates the maximum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
3.0 cubic feet
Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
7"
Cutout Diameter
The actual diameter of the hole you will need to cut out if you are creating a new mounting location for this speaker, or if you are mounting a subwoofer in a box.
13-5/8"
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

No

Electromechanical Parameters

Free-Air Resonance (Fs)
The free-air resonance frequency of the subwoofer, measured in Hz. At this frequency the weight of the moving parts is perfectly balanced with the subwoofers suspension system.
27 Hz
Equivalent Compliance (Vas)
This is the amount of air that has the same stiffness as the subwoofers suspension. The greater the rating, the lower the stiffness and larger recommended enclosure. It is measured in Liters.
107 liters
Total Speaker Q Value (Qts)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including all dimensionless losses. Essentially, a high Qts value (closer to 1.0) means the subwoofer is great for sealed enclosures and a low Qts value (closer to 0) means the woofer is great in vented enclosures. A Qts of around 0.45 means the woofer will work decently in either enclosure type.
.44
Electrical Q Value (Qes)
The subwoofers relative damping (Q) at the resonance frequency (Fs), including electrical losses. Also called the mechanical damping of the subwoofer. The unitless measurement usually varies from 0.5 – 10.
.46
Electrical Resistance of Voice Coil (Re)
Amount of DC resistance of the subwoofer when measured with an ohm meter. Typically, this will read less than the impedance rating of the subwoofer.
3.5 ohms
Mechanical Q Value (Qms)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including mechanical losses. Also called the mechanical damping of the subwoofer. This unitless measurement usually varies from 0.5 – 10.
8.57

Specials with this Item

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On Sale

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
92%
4 Star
8%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
5.0
Value
4.8
Features
5.0
Design
5.0
Usability
4.9

TheDavel

D.C.

Overall
Durability
Value
Features
Design
Usability

Great performance for a budget sub

June 18, 2014

Considering the low price of this sub it is pretty amazing. I would however ding Alpines quality controll. There are several locations where excessive amounts of glue are visible, which can detract from the cosmetics of a high end installation. In its price range, nothing compares IMO... as for performance, I think it is comparable to my Hertz hi-energy 15 which retails at $899...

0 of 0 found this helpful

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Aaron

North Wilkesboro, NC

Overall
Durability
Value
Features
Design
Usability

Extreme Bass

November 14, 2013

It's simple, I am the envy of my friends eyes and ears. I truly dominate the sound system battle at my school.

0 of 0 found this helpful

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Sam

vancouver, WA

Overall
Durability
Value
Features
Design
Usability

Very strong

October 10, 2013

Pros: Very efficient Loud on low power Can handle more than rated RMS (If your careful) Alpine quality Cons: Stinky when there breaking in.

0 of 0 found this helpful

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moises

freeport, TX

Overall
Durability
Value
Features
Design
Usability

great price

September 17, 2013

This sub is a great deal. I have it in my 2008 Tahoe with a punch mono block and it bangs hard! It knocked of my rear view mirror off twice.

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Kris

Frankfort, IN

Overall
Durability
Value
Features
Design
Usability

Amazing for the price

April 14, 2013

I purchased on of these a few months back and it slams. powering it on an Alpine MRX-M55 at 2 ohms, 550 watt rms in a ported box to 32hz. it sounds amazing and hits harder than anything I've owned before. You can't go wrong with this sub.

0 of 0 found this helpful

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david

queen creek, AZ

Overall
Durability
Value
Features
Design
Usability

Best sub ever

March 27, 2013

I have had the type r 15 and this one sounds waaaaaay better. Alpine is the best period. I have one running at 500 rms and I can't use any mirrors at all. My rear deck by 6x9's does the wave. It's in a 2 cu ft sealed box and loves it! Love you alpine and sonic!

0 of 0 found this helpful

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Yea buddy

Kansas

Overall
Durability
Value
Features
Design
Usability

Question

December 20, 2012

Does it sound good in a ported box? If so please let me know I'm wanting to buy one

0 of 0 found this helpful

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small-mizall

memphis tn

Overall
Durability
Value
Features
Design
Usability

will get the cops at your house

December 16, 2012

good sub had it for a week now still breaking it in ,but turned it up today and a old guy 5 houses down said hes gunna call the cops if i dont turn it off ...worth the money . ive had memphis pr 15s and 12s and pioneer tsw306dvc 12 s and the alpines are better, im running 2 on a memphis st 1000d (1100w rms ) hits hard and low

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Austin

Grayling

Overall
Durability
Value
Features
Design
Usability

Loud

September 26, 2012

These subs are incredible i have them in a custom 5 cubic ft box tune to 35 hz an these things slam. A great buy for someone who wants some serious bass.

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Austin

Grayling

Overall
Durability
Value
Features
Design
Usability

Loud

September 26, 2012

These subs are incredible i have them in a custom 5 cubic ft box tuned to 35 hz an these things slam. A great buy for some one who wants some serious bass.

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Sam

Rockport, AR

Overall
Durability
Value
Features
Design
Usability

Great!!!

September 20, 2012

Have 2 of these in a sealed box on just 250 watts a piece and man these things slam!!! Going to get 2 more when I get the money.

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Joseph

Madison, AL

Overall
Durability
Value
Features
Design
Usability

Great Sound

July 9, 2012

I haven't owned any of these new Type S subs by Alpine yet, but they do have them in my local store. They had it powered on an Alpine 1000 watt amp and the box they used was ported. Sounded pretty decent for 15s, but could probably sound better in a sealed box. I would recommend these to those who love Alpine quality and speaker/subs.

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Accessory Tools and Products

Accessories added

15” Dual Sealed Single Cab Truck Subwoofer Box

Durable 11/16" Medium Density Fiberboard (MDF) construction.

Your Price $89.95

Single 15" Sealed MDF Subwoofer Enclosure

15-inch Sealed Car Sub Box Made with 3/4" MDF and lined w/ Polyfil.

Your Price $44.99

NVX 25 ft. of True Spec 12 Gauge Speaker Wire

100% OFC wire with EnvyFlex metallic jacket insulates and protects against damage from extreme conditions.

Your Price $39.99

25 ft. of Streetwires 12 Gauge Speaker Cable

You'll need speaker wire to hook up that new subwoofer!

Your Price $44.95

Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

Your Price $14.99

20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

Your Price $59.99

Dynamat Sound Dampening Trunk Kit

Did you know sound dampening will reduce those annoying rattles and even increase your SPL?

Your Price $109.95

Stinger Sound Dampening Trunk Kit

Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for your whole trunk!

Your Price $69.99

12 oz. Can of Adhesive Spray

Spray adhesive used for adhering carpet to subwoofer boxes without bubbles.

Your Price $6.99

Spring Post Terminal Cup

Makes adding a spring post terminal to an enclosure simple! Banana clip ready!

Your Price $3.99

40" x 15 Ft Piece of Premium Un-Backed Automotive Trim Carpet

Durable design for long life-span, available in many colors and shades.

Your Price $39.99

Gold Plated Dual Terminal Banana Plug Connector

Enables an expandable, secure connection accepting up to 8 gauge wire.

Your Price $3.99

Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $12.99

Xscorpion 9-Piece Nylon Plastic Pry and Chisel Tool Set

Easily removes dash/trims, door clips, panels and pins, rubber grommets and vehicle emblems.

Your Price $14.99

Cordless Multi-Functional Heat Tool Soldering Iron Kit

Continuous working lock allows you to work without holding down trigger.

Your Price $79.99

4 Ft of 1/4" Thick Black Heat Shrink Tubing

Provides abrasion resistance and added protection for your cables.

Your Price $3.99

2" Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

Universal rubber roller to make it easy to install sound dampening.

Your Price $7.99

1mm All Purpose Solder

Solder is all purpose for use on most projects where solder is needed.

Your Price $8.99

15" Protective Waffle Metal Subwoofer Grille

Keep your subwoofer looking amazing while keeping it safe with its durable metal construction!

Your Price $6.99

Scosche SPL Meter

Monitor the noise level of your new car audio system with this SPL meter measuring from 60-135 dB.

Your Price $21.99

AutoSound 2000 CD-101

Low frequency test CD

Your Price $11.99

Impedance Meter / Signal Generator

Easy to locate tuning frequencies of passive radiators and ported enclosures

Your Price $299.99

1 Alpine SWS-15D4 Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Alpine SWS-15D4 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

3 Alpine SWS-15D4 Subwoofers

Mono Amp

4 Channel Amp

4 Alpine SWS-15D4 Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Product Summary

Manufacturer

Model Number

SWS-15D4

UPC

793276011824

Weight

24.50lbs

Internal SKU

sws15d4

Internal Product ID

45527

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Alpine SWS-15D4