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RE Audio XXX15

15" Dual 2 ohm XXX Series Car Subwoofer

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List price $1624.98

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Built for Brutality

You’ve stumbled upon RE Audio’s XXX Subwoofer. Don’t be afraid. This subwoofer is built for brutality, but capable of so much more. This subwoofer competes with any high output SPL based subwoofer, but is capable of outputting amazing sound quality as well.

RE Audio knew this subwoofer was meant for those serious about the bass in their vehicles, and manufactured this subwoofer accordingly. With such a gigantic magnet, a new venting system had to be engineered; this Vented Magnet System (or VMS) allows the subwoofer to output amazing levels of power without getting too hot.

RE Audio’s XXX Subwoofer may intimidate some, however after getting to know the XXX Subwoofer, it has a kind side as well. One part of the RE Audio XXX Subwoofer completely boasts pure, unrivaled power handling, engineered primarily for excess. Another side of the XXX may surprise some, the subwoofer also sounds extremely clean and tightly responsive. RE Audio XXX Subwoofers are proudly manufactured in the USA, RE Audio truly cares about fine crafting their flagship subwoofers.

Subwoofer Features:
  • 15" Dual 2 ohm XXX Series Car Subwoofer
  • Power Handling:
    • RMS: 2000 watts
  • Impedance: Dual 2 ohm
  • Kevlar reinforced kraft pulp, dual composite 2-piece cone
  • Rubber surround
  • Integrated tinsel leads
  • FEA Optimized motor structure
  • Dual progressive spiders
  • Integrated gasket
  • Tork-Tite terminals
  • 3" 4-Layer aluminum flat wire voice coil
  • Split coil design
  • VMS Vented magnet system
  • Cast aluminum basket
  • Triple stacked magnets
  • Designed specifically for sealed or ported enclosures
  • Proudly made in the USA
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty
XXX 15" T/S Parameters:
  • Electrical Q Value (Qes): 0.58
  • Mechanical Q Value (Qms): 3.62
  • Total Speaker Q Value (Qts): 0.501
  • Free Air Resonance (Fs): 19.10 Hz
  • Equivalent Compliance (Vas): 207 liters
  • One-Way, Linear Excursion (Xmax): 54 mm
  • Efficiency (SPL 1W/1m): 85.81 dB SPL
  • Effective Piston Area (Sd): 810 cm2
  • DC Resistance (Re): 4.2 ohm
  • Nominal Impedance (Znom): Dual 2 ohm
  • Thermal Power Handling (Pe): 2000 W
  • Force Factor (Bl): 18.16

Need the Perfect Subwoofer Enclosure?

Check out the RE Audio XXX15D2 Subwoofer Enclosure Guide

For more information on the Thiele and Small Parameters, visit our T/S Parameters Article

Product History:

RE Audio XXX15 V2D2 thumbnail
(newest, current model)
RE Audio XXX15D2 thumbnail
(previous model, replaced by RE Audio XXX15V2D2 (XXX15 V2D2))

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
XXX (RE Audio)
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
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.
2000 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.
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.
2 ohms
Voice Coil Diameter
Diameter of voice coil, usually measured in inches.
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
85.8 dB
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.
54 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.
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 kraft pulp, dual composite 2-piece cone
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.
Magnet Structure
Defines the overall structure of the subwoofers magnet.
Triple 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.
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.

Recommended Enclosure Specifications

Recommended Enclosure Type
This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Ported / Vented
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.
1.6 cubic feet
Optimum Sealed Box Volume
This value indicates the ideal sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in 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.
2.1 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.
3.2 cubic feet
Optimum Ported Box Volume
This value indicates the ideal ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in 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.
4.0 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.
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.
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.


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.
19.1 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.
207 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.
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.
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.
4.2 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.
Efficiency Bandwidth Product (EBP)
This number represents the trade off between having an efficient woofer and one with a wide bandwidth. To calculate this number, take the Fs and divide it by the Qes. If the number is below 50, the woofer is designed for a sealed enclosure only. If it's between 50-100 it can be used in either. Lastly, if it's greater than 100 it's designed for vented enclosures.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating


virginia beach, VA


February 25, 2012

Why didn't I buy this sub sooner this sub has the best sound quality I've ever heard and it's pretty loud. If you buy this baby you will never buy another subwoofer ever again it's not even broken in yet and it hits the lows so hard and accurately. My wife and father in law love how it sounds and neither one of them are very big on car systems. My wife says she wants a 12 xxx in her car now. Just make sure you have the trunk space to fit the massive box you will have to put it in and an amp with 2000 watts + rms.

4 of 5 found this helpful

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Skiatook, ok

Good sub

January 10, 2013

I got this sub in June for my 18th birthday. This sub pounds hard and has great quality. The only thing is the glue they used to glue a price down will come apart once it gets cold over night and detach an then the sub won't work until u send it back to get new one or they fix it. Mine broke bout month and half ago and I have been trying to send it back to Re audio but they won't help on shipping and handling at all and it's 100+ to send it back when u has already spent a lot on the sub. The sub is great till it stopped working.

2 of 4 found this helpful

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my eyelids are flapping

June 19, 2012

Holy cow never heard this much bass what am i going to do with my laundry with all of this bass? How about eat it cause thats about all there is left to do. Brb eating laundry.

2 of 4 found this helpful

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East Troy, WI

If you want spl

February 28, 2012

I have heard a 12w7 and this RE audio sub. The RE can give you lots of sloppy spl but the W7 does the same except cleaner. If you just want bigtime spl and have room this is for you. If you want SQ and SPL get a W7AE. I got 1 in my tahoe and it slams on 600watts. Im going to do 2 12W7AE with a RF 1500watt amp (actually around 1900rms). Its a pricey setup but you will be happier than the RE Audios. NEED new altenator and good battery with these subs and want to give each minimum of 1000watts rms. Your heart may skip a beat but the bass isnt as accurate to MY TASTE, everyone is different though. The real $$$ in ANY setup is the power you give your subs and keeping volts high. Also make sure you have multiple 0guage grounds and ground the battery with 0guage too. Should be ridiculously sick if you do all that!

2 of 4 found this helpful

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T man


Pound your brain!!!

May 21, 2011

Just bought this sub from Sonic Electronix. They were great to deal with! I own a JL 13 W7 which is a great sub but I was ready to take it to the next level. RE Audio xxx did just that, and then some! This sub will pound you into submission! Make sure you have it in the optimal sq ft box(4.0 net air space vented) with lots of clean power. I use it in home theater, powered by a Crown XTI 4000(3200 watts). I have a huge sound room, and it will shake the house like there's an earthquake(probably more!)! If you buy this sub it will be the baddest sub you will ever own!

2 of 4 found this helpful

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Big G.I.B.

San Diego, CA


January 18, 2011

If you want a ground pounder that will crush the lows, you will love this sub. The MSRP/Retail price is a joke though. Don't bother trying to compare this to a W7 or MTX 9500, they are not even on the same planet. The only drawback is the basket is so freakin big, unless you have room for the correct size box, you might be straped for space.

3 of 6 found this helpful

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Accessory Tools and Products

Accessories added

NVX 20 ft. of True Spec 8 Gauge Speaker Wire

Flexible multi-strand cable bends and twists to meet your installation needs.

Your Price $49.99

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 $9.99

40 Square Feet of Sound Dampening Material

Thicker than the competition, complete sound damping kit for entire vehicle! Use for trunk, doors, roof and floor.

Your Price $119.99

Dynamat Sound Dampening Bulk Kit

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

Your Price $159.99

Stinger Sound Dampening Bulk Kit

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

Your Price $99.99

12 oz. Can of Adhesive Spray

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

Your Price $6.99

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 $1.99

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

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

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

1 RE Audio XXX15 Subwoofer

Mono Amp

Mono Amp - Option 1

2 Channel Amp - Bridged

2 RE Audio XXX15 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

3 RE Audio XXX15 Subwoofers

Mono Amp

Mono Amp - Option 1

4 Channel Amp

4 RE Audio XXX15 Subwoofers

2 Channel Amp

4 Channel Amp

Items we think you might want
XXX12D2 thumbnail
RE Audio XXX12D2

• RMS Power: 2000W
• Rubber Surround
• Dual Composite 2-Piece Cone
• Tork-Tite Terminals
• Dual Progressive Spiders
• Triple Stacked Magnets
• Flat Wire Voice Coil
• Venting System

Your Price $539.99

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Product Summary


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Internal Product ID


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: RE Audio XXX15

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