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RE Audio SEX12D4

12" Dual 4 ohm SE-X Series Car Subwoofer

  • 4.8

(61 reviews)

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$429.99

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$159.99

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Sonic was very patient with all of my questions about installing and purchasing products. I took more time then most people would. Not once did Mr Brendan H. give me any negative feedback. I would highly recommend both Mr H and Sonic Electronix.

- Joeseph R. from Brooklyn, NY

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RE Audio SEX Subwoofers

RE Audio’s SEX Line of subwoofers redefines high performance and value. These subwoofers are placed in the middle of RE Audio’s full line-up, and can handle high power output around 600 watts RMS! These SEX Subwoofers are the perfect addition to any trunk!

These impressive subwoofers are built into a cast aluminum basket, and their triple stacked magnet drivers work off of a 3” 4-layer aluminum voice coil. This allows for quick bass response, and clearly outputs for deep bass in the lower frequency range. With an FEA optimized motor structure, the SEX subwoofer lineup maintains tight bass response and allows the subwoofer full control over all types of music.

Each one of these RE Audio SEX Subwoofer can handle 600 watts RMS of continuous power, no matter the size! These competitively priced subwoofers are an excellent complement to any audio system, and will provide you with that clean, hard hitting bass you’re looking for.

Subwoofer Features:
  • 12" Dual 4 ohm SEX Series Car Subwoofer
  • Power Handling:
    • RMS: 600 watts
  • Impedance: Dual 4 ohm
  • Dual composite 2-piece cone
  • Rubatek foam surround
  • FEA Optimized motor structure
  • Progressive spiders
  • Wrap around rubber gasket
  • Tork-Tite terminals
  • 3" 4-Layer voice coil
  • Triple stacked magnets
  • Also available in a Dual 2 ohm: RE Audio SEX12D2
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty
SEX 12" T/S Parameters:
  • Electrical Q Value (Qes): 0.49
  • Mechanical Q Value (Qms): 4.5
  • Total Speaker Q Value (Qts): 0.44
  • Free Air Resonance (Fs): 25.1 Hz
  • Equivalent Compliance (Vas): 72.9 liters
  • One-Way, Linear Excursion (Xmax): 18 mm
  • Efficiency (SPL 1W/1m): 86.1 dB SPL
  • Effective Piston Area (Sd): 480 cm2
  • DC Resistance (Re): 2.8 ohm
  • Nominal Impedance (Znom): Dual 4 ohm
  • Thermal Power Handling (Pe): 600 W
  • Force Factor (Bl): 17.7

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

Product History:

(newest, current model)
RE Audio SEX12D4 thumbnail
(previous model, replaced by RE Audio SEXv2-12D4)
Subwoofer Specifications
Subwoofer Series SEX
Subwoofer Size 12"
RMS Power Handling 600 watts
Voice Coil(s) Dual
Impedance (Per Voice Coil) 4 ohms
Voice Coil Diameter 3"
Sensitivity 86.1 dB
Xmax (millimeters) 18 mm
Subwoofer Design Round / Circle
Main Cone Color Black
Woofer Composition Dual Composite 2-Piece Cone
Woofer Surround Rubatek Foam
Magnet Structure Triple Stacked
Subwoofer Grille No
Re-Cone Kit Available No
Recommended Enclosure Specifications
Recommended Enclosure Type Ported / Vented
Sealed
Minimum Sealed Box Volume 0.75 cubic feet
Maximum Sealed Box Volume 1.0 cubic feet
Minimum Ported Box Volume 1.5 cubic feet
Maximum Ported Box Volume 2.0 cubic feet
Top-Mount Depth 7"
Cutout Diameter 11-1/4"
Shallow Mount Installation No
Electromechanical Parameters
Free-Air Resonance (Fs) 25.1 Hz
Equivalent Compliance (Vas) 72.9 liters
Total Speaker Q Value (Qts) 0.44
Electrical Q Value (Qes) 0.49
Electrical Resistance of Voice Coil (Re) 2.8 ohms
Mechanical Q Value (Qms) 4.5
Efficiency Bandwidth Product (EBP) 51.22
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration 1 year
Labor Warranty Duration 1 year
Warranty Provider Manufacturer
Customer Review Summary for RE Audio SEX12D4
Average Customer Rating is 4.8 out of 5 stars:
  • 4.8
based on 61 Reviews
Share your thoughts with others:
Rating Distribution:
5 star:
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82%
4 star:
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15%
3 star:
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3%
2 star:
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0%
1 star:
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0%
what's this?
Average Attributes Rating:
Durability
  • 4.6
4.6
Value
  • 4.7
4.7
Features
  • 4.7
4.7
Design
  • 4.9
4.9
Usability
  • 4.8
4.8
what's this?
Quick Comparison:
Most Helpful Customer Reviews:
September 7, 2010 One of the BEST Subs I’ve Ever Heard
16 of 16 people found the following review helpful:
Review by
Owen from Santa Clarita, CA
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
The RE Audio SEX12D4 is one of the best sounding subwoofers I have ever heard. Seriously, this sub is incredible. At first I was a little skeptical about it. I had heard really good reviews about the sub, but I couldn’t get over the low price. I guess this subwoofer is in the same class as the Alpine Type-R, Kicker CVX, Rockford Fosgate P3, Pioneer Champion Pro, MTX Thunder 8500, etc… BUT I think it sound SO much better! The RE Audio SEX woofer plays LOUD. Right now I have it in a vented enclosure tuned at approximately 32 Hz and it is hands down the best sounding subwoofer I have had in my car. No matter what type of music I am listening to, it sounds great. When I’m testing my system with some Eagles – Hotel California (live version of course), the bass is the perfect amount to compliment the speakers. Not too overbearing, but just enough punch. When I put on some Hip Hop, the bass notes hit deep and I can feel the bass. This sub will sound great with all genres of music.



It has some serious excursion too. I put on the Bass Mekanik – Sonic Overload CD and really tested the bass. I was really impressed. The sub was flying all over the place! Sounded much better than the several subwoofers that have been in the car before it. Don’t want to say specifically which subs it sounded better than (hint: read above), but this is definitely sounded better, and not just for SPL. I have found that the RE Audio SEX 12” sub is great for SQ as well. Currently, I have it hooked up to a Kicker 750.1 amp that stated 925 watts RMS on the birth sheet. So even if the amp is just giving the sub 750 watts RMS, this sub is still running smooth. Even though they state 600 RMS, just bring the gains down and you can hook it up to amp that put out a lot more power. Probably the safest bet to hook it up to a perfectly matched 600-watt car amplifier.



Overall, I am 100% impressed and converted to RE Audio subs. For the price that Sonic Electronix has, you can’t go wrong. This is bass that I would expect to spend $400-500. Plus, I love the look of the cone. Just a simple black inverted dome with the RE logo. Simple and cool.
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June 10, 2011 Amazing subwoofer
4 of 4 people found the following review helpful:
Review by
Josh from Iowa
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 4.0
Usability
  • 5.0
This sub is great, I own two of them in a ported box 1.75cu for each sub. I have them running on a Hifonics Brutus 1200.1 @ 1 ohm. These sound great in my suburban they hit the lows very well and get loud. Not to mention the sound quality is amazing. They are very power hungry I wish I would have gone with the 1700.1 amp. Ive pounded these subs very hard and clipped them for long periods of time to see what they can handle and they still hit hard. Amazing sub amazing service from Sonic Electronix.
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June 5, 2011 Slamming.
4 of 4 people found the following review helpful:
Review by
Josh from fishers, IN
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
This sub is the only sub I've ever purchased, but from hearing friends' systems, I can tell you that this is for sure the cleanest sub I've heard, while still hitting nice and hard.



If only the LPF on my HU was better, I wouldn't have to worry about blowing out the two stock mids I have yet to replace!



*only thing to look out for* make sure the box that you buy has a big enough diameter hole to fit this sub. If you call support, they will tell you that they have a certain box that will fit it. For me it was too late, but trust me, it's easier in the long run to just give them a ring.
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August 25, 2010 True Sleeper!!
4 of 4 people found the following review helpful:
Review by
Jay Frank from Pittsburgh Pa
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
I have 2 of these installed in my 03 Acura Cl. I have them hooked up to a Hifonics Amp @ 1ohm 2000 rms. Let me tell you it feels like my eye lids are flapping when i crank it. Highly recommended! All my friends have a puzzled look when i tell them RE Audio aka True Sleepers.
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February 13, 2012 Some of the best sounding subs ever
2 of 2 people found the following review helpful:
Review by
Robert from Maryland
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
I bought these after seeing how much people on Youtube liked them, and I will agree. They are the loudest and cleanest sounding subs I have ever heard with extreme amounts of excursion. I have two of these wired to 1 ohm in a sealed box powered by an 1800w Kenwood amp and I just simply blows me away. I had two Kicker CVR's previously but these blow them out of the park. I can't wait to get my RE Audio Amp that pushes 2400w on these guys. These are a must buy item!
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View All 61 Reviews for RE Audio SEX12D4
Empty Enclosures
Every subwoofer needs an enclosure to mount in and these high quality boxes are perfect for your new woofer! After a quick installation, you'll be ready for some real bass in your car!
  Product Price Add?
Ported Subwoofer Enclosure Ported Subwoofer Enclosure
Dual 12" ported/vented enclosure carpeted gray and made with solid 3/4" MDF.
$79.99
Subwoofer Grilles
Protect your subwoofer while making your enclosure look great! These subwoofer grilles are the perfect addition to your new subwoofer.
  Product Price Add?
12" Universal Subwoofer Grille 12" Universal Subwoofer Grille
Protect your subwoofer with this aluminum grille that is simple to install.
$18.99
Speaker Wire
Choose from our recommended speaker wire to hook up your amplifier to your new subwoofer. The higher quality of speaker wire that it used for this connection, the better your subwoofer will sound.
  Product Price Add?
15 ft. of 12 AWG StreetWires Speaker Wire 15 ft. of 12 AWG StreetWires Speaker Wire
This SuperCable from StreetWires is a noise free link between your amplifier and your subwoofer.
$24.99
20 ft. of 12 AWG Kicker Speaker Wire 20 ft. of 12 AWG Kicker Speaker Wire
Kicker uses twisted pair technology and hyper-flex cable to provide you with the cleanest sound and a simple installation.
$39.95
Sound Dampening Material
Get the most sound out of your new subwoofer with some high quality sound dampening material. It will keep the road noise out and the music inside the car.
  Product Price Add?
Dynamat Rubber Roller Dynamat Rubber Roller
Install your Dynamat with ease! This heavy duty rubber roller is designed specifically to install your Dynamat!
$18.99
Dynamat Extreme Bulk Pack Dynamat Extreme Bulk Pack
36 ft. Dynamat Xtreme Bulk Pack enhances the sound for your entire car!
$159.99
Bass Reconstruction Processors
These sound processors are perfect for enhancing the lower frequencies of a car audio system. After some installation and tuning, your new system will sound better than ever!
  Product Price Add?
The Epicenter by AudioControl (Gray) The Epicenter by AudioControl (Gray)
The original bass booster expander with included remote will enhance the bass of your new system.
$159.99
Enclosure Accessories
These accessories are designed to help you build the custom enclosure that you have always wanted, or add to the box that you already bought. Either way, these products can assist you in achieving better sound, better looks, and more bass!
  Product Price Add?
20 oz. Bag of Poly-Fil 20 oz. Bag of Poly-Fil
Polyester fiber fiberfill adds better bass to your system.
$5.99
16 oz. Can of Adhesive Spray 16 oz. Can of Adhesive Spray
Spray adhesive used for adhering carpet to subwoofer boxes without bubbles.
$5.99
Binding Post Terminal Cup Binding Post Terminal Cup
Use this to easily install a binding post terminal to your subwoofer enclosure.
$4.99
Banana Clip Terminals Banana Clip Terminals
These high grade banana clips allow you to plug into your banana clip ready terminal for a secure connection.
$4.99
Installation, Tools & Accessories
Don't forget to get the tools and accessories that will help you install your new subwoofer in your vehicle. Whether you opt for the professional installation card or the do-it-yourself method, you will need the following to help you out!
  Product Price Add?
Car Stereo and Speaker / Subwoofer Installation Tool Kit Car Stereo and Speaker / Subwoofer Installation Tool Kit
Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.
$14.99
System Optimization and Tuning
Use these items to assist in testing and tuning your new car audio system to perfection!
  Product Price Add?
Scosche SPL Meter Scosche SPL Meter
Monitor the noise level of your new car audio system with this SPL meter measuring from 60-135 dB.
$24.99
AutoSound 2000 CD-101 AutoSound 2000 CD-101
Low frequency test CD
$12.99
AutoSound 2000 CD-102 AutoSound 2000 CD-102
High frequency test CD specifically designed for the set-up and evaluation of sound system imaging and placement.
$12.99
AutoSound 2000 CD-103 AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components.
$12.99
Main Product
  Product Price Add?
RE Audio SEX12D4 RE Audio SEX12D4 $159.99

For more information on wiring subwoofers, visit our Subwoofer Wiring Guide: Subwoofer Wiring Guide

Product Summary

Manufacturer: RE Audio
Model number: SEX12D4
UPC: 611892991071
Weight: 24.00 lbs
Internal SKU: sex12d4
Internal product ID: 27312