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RE Audio REX10D4

10" Dual 4 ohm REX Series Car Subwoofer

Discontinued
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This item has been discontinued

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Bundled Savings with this Product

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10% Off on the Subwoofer Box!

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

3.50

27301

504

RE Audio REX10D4

$54.95

+

10% OFF

Single 10" Sealed MDF Subwoofer Enclosure (Belva MDFS10)

$34.99

Special Price $31.49 ($34.99 if purchased separately)

Single 10" Sealed MDF Subwoofer Enclosure (Belva MDFS10)

• 3/4" Medium Density Fiberboard Construction
• Durable Black Carpeting
• Pre-Lined with Poly-Fil
• Gold Speaker Terminals

(Offer 1 of 1)

Combined Total Price

$86.44

You Save $3.50

Anything But Entry Level

What RE Audio calls entry level is anything but entry level. Introducing the new REX series. It offers incredible output and distortion free sound you would come to expect from subs costing far more. REX car subwoofers are perfect for those just entering the car audio scene. Popular among the import and other cars where weight is important, these lightweight subwoofers are an excellent solution for performance vehicles that can’t have heavy subwoofers with large boxes. The mica filled poly cone is stiff and rigid, while the Santoprene rubber surround allows excellent response. Behind the cone is a high temperature 8-layer copper voice coil, a FEA optimized motor structure, and a conex spider that all assist in the linearity of the subwoofer when in use. With a RMS power handling of only 175 watts, these subwoofers do not require a large, powerful amplifier. However, like all of the RE Audio subwoofers, they are capable of accepting much more power then the recommended RMS. For an entry level subwoofer that is far beyond all the other entry-level subwoofers, trust the RE Audio REX series of car subwoofers to bring great bass in your car.

Product Features:
  • 10" Dual 4 ohm REX Series Subwoofer
  • Power Handling:
    • RMS: 175 watts
  • Impedance: Dual 4 ohm
  • Mica filled poly cone woofer
  • Santoprene rubber surround
  • Pressed steel basket
  • FEA Optimized motor structure
  • Linear Conex spiders
  • Rubber gasket
  • High temperature 8-layer copper voice coil
  • Powerful, single stacked magnet
  • Sensitivity: 84.7 dB
  • Mounting Depth: 5"
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty
REX 10D4" T/S Parameters:
  • Electrical Q Value (Qes): 0.39
  • Mechanical Q Value (Qms): 4.37
  • Total Speaker Q Value (Qts): 0.36
  • Free Air Resonance (Fs): 21.5 Hz
  • Equivalent Compliance (Vas): 75.6 liters
  • One-Way, Linear Excursion (Xmax): 12 mm
  • Efficiency (SPL 1W/1m): 84.7 dB SPL
  • Effective Piston Area (Sd): 322 cm2
  • DC Resistance (Re): 3.2 ohm
  • Nominal Impedance (Znom): Dual 4 ohm
  • Thermal Power Handling (Pe): 175 W
  • Force Factor (Bl): 15.4

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

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
REX (RE Audio)
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
10"
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.
175 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
Sensitivity
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".
84.7 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.
12 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
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.
Mica Injected Polypropylene (MIPP)
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.
Single 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.
No
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

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
Sealed
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.
0.35 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.
0.5 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.
0.65 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.
1.0 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.
5"
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.
9-1/4"
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.
21.5 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.
75.6 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.
0.36
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.
0.39
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.
3.2 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.
4.37
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
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
81%
4 Star
12%
3 Star
4%
2 Star
4%
1 Star
0%

Average Attribution Rating

Durability
4.6
Value
4.8
Features
4.6
Design
4.8
Usability
4.9

Ken

Grants Pass, OR

Overall
Durability
Value
Features
Design
Usability

Great little sub.

November 13, 2010

This is a great little subwoofer. I needed a sub that would work well in a small enclosure under the rear seat of my '09 Titan. It is a perfect match to Sonic's Single 10" Angled Truck or Hatchback Box (10ANTCM). This combination fits perfectly under my seat and sounds great. Nice tight, clean, accurate bass. I'm only using one and it fills out the bottom end of my system nicely. Won't rattle the windows of the cars next to me with just one, but I'm getting too old that kind of bass anyways. I'm more into sound quality than sound quantity these days. Give me clean highs, smooth mids, and accurate, unexaggerated bass and I'm a happy man. I no longer feel the need to wake the dead with my car stereo like I did when I was younger. If you are wanting to win SPL competitions, get something else. Bottom line is, if you are looking for good clean bass that you can feel and enjoy, get this sub.

4 of 4 found this helpful

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glenniz

Grants Pass, OR

Overall
Durability
Value
Features
Design
Usability

WOW!!!

April 6, 2012

I am very impressed with this sub!! This sub truly does sound very musical and hits extremely low and hard! A .50 cubic foot box is all it requires with only 200 watts of power and it sounds as good as many sub's costing triple.

2 of 2 found this helpful

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Ken

Grants Pass, OR

Overall
Durability
Value
Features
Design
Usability

Two is better than one!

January 10, 2012

I've been running one of these in my crew cab Titan under the rear seat for over a year now and it sounded good, but I wanted a little more since the Titan has such a big cab. I purchased another one of these and the identical box (see my previous review) and all I can say is WOW! Sounds amazing hooked up to a Rockford Fosgate two channel amp rated at 200 watts RMS x2 @ 2 Ohms. RF also under rates their amps; my birth sheet that come with the amp says it tested at 263 watts x2 @ 2 Ohms. These subs are only rated at 150 Watts RMS, but they are taking the power flawlessly with the gain on the amp set just under 1\2 way. Couldn't be happier with these subs. RE makes some good stuff and Sonic has the best prices you'll find anywhere!

2 of 2 found this helpful

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Robert

Pensacola, FL

Overall
Durability
Value
Features
Design
Usability

Great Sub

October 21, 2010

I have two in my truck, they sound extremely clean and the bass is nice. You cant beat the price and value of these subs, I recommend RE Audio.

2 of 2 found this helpful

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DEAN

Canada

Overall
Durability
Value
Features
Design
Usability

great sub

September 16, 2010

had to replace a cooked sub so the enclosure is SMALL-.230 sealed. this unit shows .35 min. wired 2ohm with PG R250.1 running it, packed the polyfill. It sounds really good for the mismatch. thick lows and some punch. hard to find small cube subs, very happy, and delivery was right on time.

2 of 2 found this helpful

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Joseph

tulsa, OK

Overall
Durability
Value
Features
Design
Usability

these are great

February 6, 2014

these are great for the money and would definitely buy again

0 of 0 found this helpful

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Rich G.

Mountain Top, PA

Overall
Durability
Value
Features
Design
Usability

it blew

January 27, 2013

Hey everyone. I had a bad experience with this sub. I had it for a week and it died on me. I've had plenty systems so I know it was not hooked up wrong. Box was good that I had just sub sucked. It sounded good for that week though. I guess you get what you pay for.

0 of 0 found this helpful

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jonathan

marengo, IN

Overall
Durability
Value
Features
Design
Usability

Great subwoofer!

October 21, 2012

Great 10" subwoofer, don't be fooled by its small size. Its an underrated subwoofer. More like 200-225 watts rms than 175. Had it powered with an MTX terminator 250/1 @2 ohms and it sounded quite loud and good sound quality as well. Would recommend this subwoofer for someone who wants some extra thump with their stereo. I bought this for my mother and she still thought it. Was too much thump for her. The box that it was in was the max ported box it should be put in. When i took it out of the car, i used it in my room and gave it the same power. Made a great computer system subwoofer as well.

0 of 0 found this helpful

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Samantha

New Britain, CT

Overall
Durability
Value
Features
Design
Usability

Good value and quality

September 10, 2012

Good quality speakers, easy installation, clean look. Good packaging and quick shipment. Thank you!

0 of 0 found this helpful

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Cody

San Diego, CA

Overall
Durability
Value
Features
Design
Usability

Great Sound

July 4, 2012

Clean sub, plenty of thump for its size and plays very clear. I would go with another sub if you want it to rattle the windows in your neighborhood but this one is definitely the cleanest sounding one for the price.

0 of 0 found this helpful

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Michael

St. Louis MO

Overall
Durability
Value
Features
Design
Usability

Perfect budget subwoofer

June 14, 2012

I've owned everything from competition SQ systems to mid range SPL systems to budget builds. Hands down, this is THE best budget subwoofer. I wish they made it in single voice coil for wiring purposes, but regardless, this is the perfect sub for a small, budget build. Adds all the lows you need without shaking the neighbor's windows. If you're looking for a $50 sub, this is it. I built an entire system for my jeep for $125, and I wouldn't change a thing about it. Perfect starter/adult system.

0 of 0 found this helpful

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Daniel

Maysville, KY

Overall
Durability
Value
Features
Design
Usability

Great sub for the money

May 2, 2012

I like this sub so well that I am buying the 8" version for my other pickup!

0 of 0 found this helpful

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Paolo

Las Vegas, NV

Overall
Durability
Value
Features
Design
Usability

Monster

March 14, 2012

I bought two of these RE Audio REX10D4 and put then in a custom built box with L ports tuned to 35Hz about 1.2Cu per sub and I have it wires in parallel ran by kicker zx400.1 and all I can say is holy wow I have this setup in a Tacoma single cab. I've had to lock tite like six bolts I found loose. I only have the amp gain at about 3/4's of the way up and the bass boost at about half way. These are the best bang for your buck sub you could possibly find. The only thing I wasn't amused of was that the wire terminals weren't the spring action ones but hey if you don't mind that then you'll be fine. These subs bump louder than the two 12 kicker CVR's I have and they run on less than half the power than the kickers did!! Buy now!!!! If your thinking about it stop thinking!!! Get these worth every penny especially here at Sonic the best place to shop for online electronics!!!

0 of 0 found this helpful

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joel

Payette, ID

Overall
Durability
Value
Features
Design
Usability

Nice Clean Bass

March 13, 2012

I was in shock with the bass with this budget priced subwoofer. I was playing around one day with my car and put just one of these in the trunk with a sealed box and it sounded just as good as 2 10" kicker comps in one ported box. Don't let the price fool you these are great subs.

0 of 0 found this helpful

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impala2010

Lewistown,PA

Overall
Durability
Value
Features
Design
Usability

Bigger then 10"

January 13, 2012

I have 2 of these in single 1cu ft boxs tuned to 35hz running off of a 360a2 fosgate amp pushing about 200watts each and they pound. Tight clean bass. I had some 12" rf punch hd and these 10" throw out just as much bass but tighter and cleaner. I'd like to see what the 12" are like. Definitely recommend this for the price, value and quality.

0 of 0 found this helpful

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jval

Dallas, TX

Overall
Durability
Value
Features
Design
Usability

Bang for the buck

December 31, 2011

I'm very impressed with this sub. I have it in a sealed box that is right under .5 cu ft with the Orion CO5001 running 250w at 2Ohms. The sound is tight and hits hard. Would definitely recommend this sub for people who aren't looking to wake up the neighbors but just want quality sound. Excellent sub for the price range. Can't comment on longevity as I haven't had this for very long.

0 of 0 found this helpful

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Mike

West Chester, OH

Overall
Durability
Value
Features
Design
Usability

Good sub

November 27, 2011

Picked up two of these to throw in my blazer about a year ago. On 400 watts they bang pretty good. I sold em to a buddy to put in his car and they are still going strong.

0 of 0 found this helpful

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raisintheboost

Milton Pa

Overall
Durability
Value
Features
Design
Usability

Good Budget Sub

October 21, 2011

It is a good sub if you are on a budget and want some extra thump that factory speakers do not provide. Would buy again.

0 of 0 found this helpful

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Fish

San Jacinto, CA

Overall
Durability
Value
Features
Design
Usability

Clean

July 4, 2011

It sounds great. Hard to believe their is only one sub in my truck. Great price, great quality.

0 of 0 found this helpful

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Jonathan

San Jose, CA

Overall
Durability
Value
Features
Design
Usability

pretty decent

May 5, 2011

Over six months of clean bumpin' and still doing well. Cheaper speaker but pretty good quality.

0 of 0 found this helpful

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Accessory Tools and Products

Accessories added

Single 10" Subwoofer Angled Truck or Hatchback Box Enclosure

CARB Compliant, 5/8" MDF Shallow Sub Enclosure Lined with Polyfil.

Your Price $34.99

Single 10" Sealed MDF Subwoofer Enclosure

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

Your Price $34.99

Single 10" Ported Enclosure Custom Black Baffle

Durable 3/4" Medium Density Fiberboard (MDF) construction.

Your Price $54.99

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

20 oz. Bag of Poly-Fil

Polyester fiber fiberfill adds better bass to your system.

Your Price $5.99

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

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

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

Universal 10" Subwoofer Grille

Keep your subwoofer safe from accidental damages with this amazing grill.

Your Price $13.99

10" Protective Waffle Subwoofer Grille

Keep your subwoofer looking amazing while keeping it safe.

Your Price $4.99

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 RE Audio REX10D4 Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 RE Audio REX10D4 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

3 RE Audio REX10D4 Subwoofers

Mono Amp

4 Channel Amp

4 RE Audio REX10D4 Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

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Product Summary

Manufacturer

Model Number

REX10D4

UPC

611892991026

Weight

8.00lbs

Internal SKU

rex10d4

Internal Product ID

27301

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 REX10D4