MTX re-Q

Bass restoration signal processor
Get full bass response when adding amps to a factory system

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Item# 236REQ

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Overview
Details
Customer Reviews
Category Info
Accessories

Our take on the MTX re-Q

by Ken Nail

Most factory stereos, even premium systems, protect speakers by reducing bass output when the volume is turned up. That's OK in a stock system, but this limitation will hamper low-frequency performance if you want to upgrade your factory stereo with amplifiers and subwoofers.

The MTX re-Q senses the input level from the factory stereo, adding more bass at high volume levels, while keeping bass response balanced when the volume is low. Now you can keep your factory stereo and its steering wheel controls while truly improving the sound.

The re-Q wires up to the speaker outputs of your factory stereo, and its stereo and subwoofer preamp outputs connect to your amplifiers. You'll find individual gain controls for the right, left, and sub outputs, plus low-pass and subsonic filters for maximizing your sub's performance. A bass enhancement switch lets you kick in a little more bump if you desire.

Highlights:

signal processor restores bass when adding amps to a factory system
right, left, and subwoofer preamp outputs
low-pass and subsonic filters
Bass Enhance switch
8-1/8"W x 1-1/16"H x 3-3/4"D
warranty: 1 year
Our 60-day money-back guarantee

Hands-on research from the Crutchfield Labs (what are the Labs?)

What’s in the box? | In-depth notes

Product Research

What's in the box?

Download owner's manual

Re-Q module
12" Input harness
In-line fuse holder with 8" wire
Instructions

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Features

Overview: The re-Q restores and enhances bass response intentionally removed from a factory stereo system.

Balanced Bass: Rather than just turning up the bass linearly, the re-Q senses the factory radio output and adjusts its boost level to balance the sound.

Smart Engage: An input signal sensing circuit turns the re-Q on automatically. There is also a remote turn-on input if you prefer not to use the Smart Engage feature.

Speaker Level Input: There are speaker level inputs for left, right, and subwoofer channels. The compatible input range is 250 mV to 30 V. If your factory system has no sub, the re-Q's sub output is taken from the left and right inputs.

Line Level Output: The line outputs for left, right, and sub are individually adjustable. The maximum output is 2.5 volts for the full range channels and 8 volts for the sub.

Crossover: The subwoofer crossover is continuously adjustable from 40 Hz to 200 Hz.

Subsonic Filter: The subsonic filter is continuously adjustable from 10 Hz to 40 Hz.

Review Summary

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14 people say:

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1-10 of 14 items >> Sort Results By: Date Reviewed | Rating | Helpfulness

5 out of 5

Perfect for Toyota w/ JBL

Written By Mark, Naperville IL on Sunday, October 12, 2008

This adds a huge performance boost to my 2008 Tundra w/ the JBL audio system. All connections can be made at the factory amp under passenger seat. I connected it to the woofer outputs from the amp, along with the WFR front signal outputs based on Toyota's wiring diagrams. No need to run ignition lead; it auto senses and provides a handy remote turn on lead for your amp.

4 out of 4 people found this helpful

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5 out of 5

Great Product

Written By Casey, outside of Memphis, TN on Monday, May 21, 2007

Crutchfield Customer Review (What's this?)

Crutchfield Customer Review

The reviewer purchased this item from us, verified by the email address on the order.

This is a really great product. It was easy to install, and it made my 10" fosgate punch and fosgate amp thump harder than ever before. Including running it off a basic after market stereo. I suggest buying this pre-amp if your running your amp off of the high output (speaker wires) jack on your amp.

49 out of 53 people found this helpful

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5 out of 5

Go For It

Written By Jay, Seattle-Tacoma,WA. on Friday, August 01, 2008

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Crutchfield Customer Review

The reviewer purchased this item from us, verified by the email address on the order.

I brought this product because of Leased Car
MTX Has always made good products that are AFFORDABLE.
Like mentioned,It Q's your bass and works AWESOME.
Keep ur Sealth Look but amaze your friends and Family with your stock/factory deck with aftermarket sound. The unit is small too,for additional adjustments. under seat,under dash
Remember -Out Of Sight ,Out Of Thief

2 out of 4 people found this helpful

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5 out of 5

MTX re-Q

Written By Chris, Boston, Ma on Tuesday, June 26, 2007

This is a good product. I seen it in a MTX's Chevy Colbalt and it had it thumping 8 10" Thunger7500 right off the factory HU. Good product

11 out of 18 people found this helpful

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5 out of 5

MTX re-Q

Written By Lpfont, Louisiana on Sunday, December 30, 2007

Crutchfield Customer Review (What's this?)

Crutchfield Customer Review

The reviewer purchased this item from us, verified by the email address on the order.

I have a 03 Tundra X-Cab with a Custom Q-Logic Box with two 8" Punch Subs in it driven by a Fosgate Punch 125 watts RMS X 2 which were all purchased from Crutchfield. Using the factory radio to keep this system totally stealth it had a really good sound. The only problem was when it was turned up above half way it seemed as though the bass should be hitting harder. The answer was installing a MTX re-Q, which took care of this problem and then some. With all of the adjustments on this unit you can really add a lot of Great Clean Thunderous BASS to your system. This unit even gave me more BASS at low volume levels too. I didn't expect this much performance to come out of this product ! I had no idea that two 8" subs could produce this much BASS ! Thanks MTX for making this product and Thanks Crutchfield for telling me about it !

17 out of 19 people found this helpful

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5 out of 5

FINALLY!!!! My Music is BACK!!!

Written By John, Evansville, IN on Friday, February 06, 2009

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Crutchfield Customer Review

The reviewer purchased this item from us, verified by the email address on the order.

Once I got the unit installed properly (much love to Crutchfield Support!!) and fine tuned the controls, I was once again in audio heaven. This unit does an excellent job of restoring high and low frequencies robbed by factory installed sound processors.

Only been using it for a couple of months so I will have to wait and comment on the lifespan on the unit, so till then...... ROCK ON!!!

4 out of 4 people found this helpful

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5 out of 5

Firs time purchasing a product like this

Written By KCBrian, Kansas City, MO on Friday, October 22, 2010

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Crutchfield Customer Review

The reviewer purchased this item from us, verified by the email address on the order.

This is the firs time I 've installed a product like this. It makes the stock Infinity sound system
sound so much better. Tony in sales and Ely in tech support were so patient and great to
work with. I will be using Crutchfield again!

Was this review helpful? Yes | No

5 out of 5

Works great on an 09 GMC with navigation

Written By Colorblind83, Houston Texas on Sunday, December 19, 2010

Wired up a Clarion Monoblock to a 2 ohm CVR Shallow Kicker under the rear seat.
I used the handy little device and spliced into the factory left rear speaker
wire for a signal and it WORKS PERFECTLY! All i had to adjust was the crossover
portion, AWESOME PRODUCT!!! If you have a factory radio and don't want to change
it out, its too complicated, too expensive, or you just love your factory radio,
BUY THIS NOW! You won't regret it!
The only con is that the instructions are really brief, so they don't explain
all the settings clearly, but I'm sure Crutchfield would be happy to assist
anyone who buys this from them :)

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5 out of 5

Way better than a Line Converter

Written By Bad Robot, San Diego, Ca. on Thursday, April 21, 2011

My advice to those who want to keep their OEM radio is to by this now! Maybe you
want stealth or to just keep the clean factory look of the dash as it was
intended but this little beauty will deliver great sound. I used it in a 2005
Jeep liberty with only the factory CD player (it won't even play MP3's) and a
Scosche aux in adapter. I have an iPhone and use it for all my in car
entertainment. Since this is my "spare vehicle" and sits on the street most of
the time, I wanted to minimize its break in appeal. I am only running a Legacy
(cheap) mono amp and an old 12" MTX thunder 6000 with the original stock
speakers. The bass sounds GREAT and really improves the over all listening
experience. I am going to add one to my new 2011 Dodge Nitro (keeping the Mygig)
as well.

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5 out of 5

Its soooo easy.

Written By Robert, Haughton, LA. on Wednesday, December 09, 2009

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Crutchfield Customer Review

The reviewer purchased this item from us, verified by the email address on the order.

Well this little gizmo made my amp install soooo easy. You just run it to the rear speakers and a power source. I didnt even have to splice any wires. I'm glad I called Crutchfield for advice, thanks Dean.

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1-10 of 14 items >>

Learn more about Factory Sound Processors

What are Factory Sound Processors?

Zak Billmeier

3/17/2008

based on 70 ratings (14 comments)

Factory sound processors take your factory stereo's signal, clean it up, and send a corrected audio signal to your aftermarket amps and subwoofers.

Jeff's Tips for Getting Maximum Sound Quality in Your Car

Jeff Fay

12/28/2010

based on 605 ratings (39 comments)

Your car can be a great place for music listening. Many commuters suffer for hours each day with inferior sound quality that they'd never tolerate from their systems at home. Others assemble...

Video: Upgrading Your Factory Stereo, part 2

Robert Ferency-Viars, Ken Nail

7/25/2008

based on 17 ratings (2 comments)

Just because you can't replace your vehicle's factory stereo doesn't mean you have to live with a poor sound system. In this short video, Crutchfield experts take a look at how a fellow employee...

Processors and Other Upgrades

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4/27/2012

based on 2 ratings (8 comments)

Part 3 of our series: Jeff upgraded his speakers again, ran higher-quality wire, and added a processor to sculpt the sound. He had to modify his door a little to get the speakers to fit — but...

Visit our Learning Center to learn more about Factory Sound Processors

For a more in-depth review and enhanced detailed information on the MTX re-Q, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_236REQ/MTX-re-Q.html ).

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MTX re-Q

Bass restoration signal processor
Get full bass response when adding amps to a factory system

Item# 236REQ offer details

Review Summary