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RE Audio REX8D4

175W 8" REX Series Dual 4 ohm Subwoofer

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• RMS Power: 175W
• Dual 4 ohm
• Mica Filled Poly Cone Woofer
• Santoprene Surround
• FEA Optimized Motor Structure
• High Temperature 8-Layer Copper Voice Coil

Learn more about the rex8d4

We apologize

This item has been discontinued

Product Highlights


• RMS Power: 175W
• Dual 4 ohm
• Mica Filled Poly Cone Woofer
• Santoprene Surround
• FEA Optimized Motor Structure
• High Temperature 8-Layer Copper Voice Coil

Description


RE Audio brand icon

Authorized dealer

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 RES series of car subwoofers to bring great bass in your car.

  • 8" 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
  • Also found as: REX-D4, REXD4
  • Sensitivity: 81.2 dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Subwoofer Wiring Guide


Wiring Guide to Wire 1 RE Audio REX8D4 Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 RE Audio REX8D4 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

Wiring Guide to Wire 3 RE Audio REX8D4 Subwoofers

Mono Amp

4 Channel Amp

Wiring Guide to Wire 4 RE Audio REX8D4 Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Specifications & Details


Subwoofer Specifications
Series
REX Series
Subwoofer Size
8"
RMS Power Handling
175 watts
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
4 ohms
Sensitivity
81.2 dB
Xmax (millimeters)
12 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Mica Injected Polypropylene - MIPP
Woofer Surround
Santoprene Rubber
Magnet Structure
Single Stacked
Subwoofer Grille
No
Re-Cone Kit Available
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Sealed
Minimum Sealed Box Volume
0.3 cubic feet
Maximum Sealed Box Volume
0.35 cubic feet
Minimum Ported Box Volume
0.35 cubic feet
Maximum Ported Box Volume
0.5 cubic feet
Top-Mount Depth (Mounting Depth)
4-1/2"
Cutout Diameter
7-3/16"
Shallow Mount Installation
No
Electromechanical Parameters
Free-Air Resonance (Fs)
22.8 Hz
Equivalent Compliance (Vas)
27.1 liters
Total Speaker Q Value (Qts)
0.34
Electrical Q Value (Qes)
0.38
Electrical Resistance of Voice Coil (Re)
3.2 ohms
Mechanical Q Value (Qms)
4.21
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

REX8D4

Weight:

7.00lbs

Internal SKU:

rex8d4

Internal Product ID:

27300

Product and How-to Videos


  • RE Audio New Product Line Overview | CES 2015
  • Car Subwoofer Size Buying Guide | What Size of Sub Should I Get?

Customer Ratings & Reviews



5 star
72%
4 star
17%
3 star
2%
2 star
6%
1 star
2%



Durability
4.5
Value
4.7
Features
4.3
Design
4.7
Usability
4.5

Customer Reviews

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Holy Moly!

WOW! So i hadnt really heard too much about RE before but i was looking for a cheap sub to hold me off until i could afford a better quality woofer. now, i dont have to get a better quality woofer! for 45$ shipped, you will not find a better sub than this. 175 watts RMS my ass! this little monster will easily handle more as long as you know what you're doing. great bass, relatively shallow mounting depth, great company but priced the same as those cheap china knock offs, what more could you possibly want! all for $45!!!!!!
I'm now an RE fan for life!!!!

By C on October 1, 2010

33

found this helpful.

overrated

Great looking sub. Material cone and surround is made of seems to be of good quality, my biggest complaint of this sub is the cheap hookups for the speaker wire. Upon installation one of the negative legs broke on me. for a few bucks extra they could have used a better quality connector.

I used this sub to replace the factory 8 in my 02 yukon. It is powered by the factory amp and sounds decent for what it is but i do not believe it would take much more than 100-125 watts. It will do for now but honestly i wish i had shelled out a few extra bucks and got a better sub.

By Thomas on December 29, 2011

29

found this helpful.

Sounds great and what a price

I installed 4 of these in my Porsche 911. Awesome sound and hit low for 8's. I'd say this line is comparable to the JL w1 series. Sounds really really good and a low price. I would buy again.

By Scott V on October 23, 2014

26

found this helpful.

Crazy bass for the money.

I bought 4 of these not knowing that much about RE Audio. And all I have to say that if these are entry level then I can imagine how the pro or xxx sound. I put them in a ported box and a class d mono block amp they hit like 3-10"s or 2-12"s or better with cleaner sound. Now I am a RE Audio fan. Crazy low price. There mini beast. These baby's turn on alarms in parking lots.

By Daniel on March 13, 2014

26

found this helpful.

Great lil 8

Did 4 of these at 2 ohms in a sealed enclosure and the sound quality was very good, for the price they are a great lil 8".

By Stitched on November 9, 2012

26

found this helpful.

Great sub for $50

I have four of the RE 8 w/ flared ports, tuned to 40hz on a Rockford Fosgate Power T500/2 w/ .55 cu/ft each. Sounds great, low, and loud. I listen to all types of music. Sure there are great subs out there but you can't go wrong with these little subs for 50 bucks each. Also, I purchased an RE SE 10 inch from sonic 4 years ago and still sounding great.

By n/a on October 11, 2012

26

found this helpful.

One Awesome Sub!

I needed a sub for my car that would give me decent bass and weigh as little as possible. I tried the REX8D4 figuring that for $49.00 I couldn't go wrong. Was I ever amazed at what this sub can do!! I built a .35 cu. ft. box for it and lined the interior with .75" of three layer Sonic Barrier and it's getting 150 watts at 2ohms.

After spending an hour of listening to various types of music, I found this sub to hit just as hard as the REX10D4 and it goes just as low (about 30Hz). The best part is, it can be crossed over as high as 125 Hz and will give you suberb mid bass as well as the lowest of frequencies. The transient response is fantastic, it does not sound muddy at all and the best part is it does all this at very high SPL levels!!

This sub is a great buy and will not disappoint you in any way!!!

By Glenn on May 2, 2012

27

found this helpful.

Good bass for 8

I hade to downsize to 8 inch subs because my 2 12 inch kenwoods was taking up too much trunk space. Never heard of this brand so I figure for **** I get 3 of these. Also order a box that will hold 3 subwoofers.
Got in 3 days shipping is fast. Hooked them up and wired it down to a 2ohm load and hook it up to my kenwood amp 900rms @ 2ohms. Let me tell you these things blew out my kendwood 12s. These little 8 inch subs put out some serious bass. Hitting the high and lows good. Tested out several songs from hip hop, R&B, old school hip hop and R&B,House music to Dub Step. Wasn't expecting much from them but now I'm rolling with RE audio for now on

By Big Poppa on February 13, 2013

25

found this helpful.

RE Audio REX 8" Subwoofer

Great subwoofer. Definitely handles enough power to make a good boom. At one point I had it wired at 2ohms to an Alpine 500 wrms@2ohm amp (I doubt it was getting 500watts with the gain half and the boost all down) Now it's getting less than 150wrms@2ohms and it still vibrates my mirrors and seats, ya know? Great product for the price. It will definitely handle more than 175 watts, and it will definitely be recommended to others. Fast processing, fast shipping. 2 Thumbs up SonicElectronix.com.

By Alexander on August 10, 2012

25

found this helpful.

Holy Cow !!!

purchased and installed 2 sets of MB Quart OSC213, a pair of RE Audio REX8D4, a Soundstream PN2.350D (for 8"s) and PN4.320D (for mids & tweets) controled by a Kenwood KDCBT558U. 8"s are in minimal enclosures(sealed) . this system is in a 2005 Ford f-250 Super Duty Crew Cab. Incredible sound. couldn't believe my ears. WOW!! the REX8D4's feel and sound like more expensive 10"s. i HIGHLY recommend ALL these components,and will use them again on future installs...

By fredzuki on July 8, 2014

24

found this helpful.

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