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AudioControl DQDX

Digital signal processor (Black)

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  • AudioControl DQDX

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Item #: 161DQDX
 

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Our take on the AudioControl DQDX

by Bob Bihlmayer
AudioControl

Fine tuning your ride

An automobile poses some unique challenges when it comes to getting well-tuned, perfectly aligned sound. Road noise and poor speaker placement create problems that require equalization, your subwoofer needs to be tuned to your vehicle, and the sound from the left speakers reaches the driver before sound from the right speakers, making it difficult to obtain a clear stereo image. AudioControl designed the DQDX processor to solve these problems and more.

Time alignment

The DQDX allows you to delay the signal from the appropriate speakers so the sound from all speakers reaches the driver at the same time, creating a clear stereo image. 10ms of delay is available for L/R alignment, and 35ms for front/sub alignment, allowing you to fine-tune the speaker response to the driver's position.

Ins and outs

The DQDX includes six input and output channels, arranged in pairs for front, rear, and sub. Each input pair features a seven-band graphic EQ to help solve tonal problems. The outputs use a built-in line driver with a maximum output of 7.5Vrms to drive your amplifier to full power without having to crank the amp's input gain control. The result? More volume with less noise and distortion.

Even more control

The AudioControl DQDX features a 24 dB/octave Linkwitz-Riley alignment crossover. This sophisticated crossover offers a flat response without any peak or dip around the crossover frequency and avoids the phase irregularities of lesser crossovers. You can select from six crossover frequencies ranging from 50 to 500 Hz, or a Defeat setting that turns the crossover off.

The package also includes the ACR3 control knob. This remote control offers two modes: Program mode allows the user to adjust the speaker delay, while Music mode adjusts the subwoofer level. This gives you even more control over the sound, and allows you to adjust the settings without accessing the unit directly.

The AudioControl DQDX's capabilities give you a whole new level of control over your car's sound. See where it can take you.

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Highlights:

  • black 6-channel digital sound processor with EQ, crossover, and signal delay
  • 24 dB/octave Linkwitz-Riley crossover
  • selectable crossover frequency: 50-500 Hz
  • separate 7-band graphic EQ for front/rear/subwoofer
  • front/rear/subwoofer level matching with input/output level controls
  • signal delay controls speaker time alignment:
    • L/R: 10ms
    • Front/sub: 35ms
  • high voltage line driver (maximum output level: 7.5Vrms
  • ACR-3 Dash Control Remote included
  • 12-volt 1-amp turn-on lead output
  • frequency response: 10-22,000 Hz
  • recommended fuse: 2-amp
  • dimensions: 10-1/4"W x 1-3/8"H x 6-1/4"D
  • weight: 3 lbs.
  • warranty: 5 years
  • Our 60-day money-back guarantee

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

Product Research
What's in the box?

Download owner's manual

  • 6-Channel DSP/Equalizer/Crossover
  • ACR-3 wired remote control
  • 19.5' Remote cable (RJ-14 plug on both ends)
  • Owner's manual
  • QC checklist
  • Quick reference card

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 DQDX is a 6-channel active DSP with built-in signal delay circuitry, equalizer, and electronic crossover.

Input Gain: The input gains for the front, rear, and subwoofer channels are set independently. A clipping indicator LED helps you match the input setting on the DQDX to the output of the source unit.

Output Level: There are also separate line level outputs for the front, rear, and subwoofer channels, and another LED helps you maximize the output level without clipping the signal.

Balanced/Unbalanced Input: This is typically left in the unbalanced (factory) position. If the source unit looks for a ground through the RCA cables, the ground loop will likely introduces noise into the system. Switching the input jumper to balanced might remove it.

Subsonic Filter: The PFM (Programmed Frequency Match) jumper sets the subsonic filter frequency on the subwoofer output; choose 20 Hz, 30 Hz, or Off (factory position).

Ground Isolation: The power supply ground is switchable, in case of ground loop noise. The factory position is fully isolated (typically the best choice), but can be changed to Ground or 200Ω.

Front to Sub Jumper: If the source unit has only front and rear RCA outputs, set the Front to Sub jumper to On to feed the subwoofer output from the front input.

Crossover: The crossover routs the high-pass signal to the front and rear outputs, and the low-pass signal to the subwoofer output. The crossover point options are 50 Hz, 60 Hz, 65 Hz, 70 Hz, 75 Hz, 80 Hz, 85 Hz, 90 Hz, 95 Hz, 100 Hz, 125 Hz, 150 Hz, 175 Hz, 200 Hz, 250 Hz, 300 Hz, 400 Hz, and 500 Hz.

Time Alignment: By delaying the left speaker output a few milliseconds, the Signal Delay feature lets you effectively center the listener (driver) between the left and right speakers, thus optimizing the sound stage. The Signal Delay feature also allows adjustment of the front speaker output relative to the subwoofer, to effectively bring the subwoofer forward in the car. AudioControl offers a free set-up app for iPhone and iPad, available at the AudioControl website.

Equalizer: The front, rear, and subwoofer outputs have independent 7-band equalizers. The front and rear EQ bands are centered at 125 Hz, 175 Hz, 250 Hz, 500 Hz, 1 kHz, 2 kHz, and 8 kHz. The subwoofer bands are centered at 31.5 Hz, 40 Hz, 50 Hz, 63 Hz, 80 Hz, 100 Hz, and 125 Hz. Each dial is continuously variable from -12 dB to +12 dB and there's a notch at the center position so it's easy to return to the flat setting.

Pink Noise Generator: A pink noise generator is built-in to help set the equalizer when using an RTA.

Remote: The included ACR-3 wired remote gives you easy access to the subwoofer output level. The remote is also used to program the Signal Delay circuit, and to bypass the signal processor, for an A/B comparison with and without the Signal Delay, equalizer, and crossover circuits. The remote is designed to be dash mounted, within reach of the driver; it can be mounted under the dash with the supplied bracket, or the bracket can be removed and the knob and LEDs can be custom mounted through the dash. Dimensions:

  • Width: 2.558"
  • Height: 1.477"
  • Depth: 1.811" (2.465" including knob)

Input/Output Level: The input gains and output levels are set independently for the front, rear, and sub channels. To help correctly set the input, a Maximized LED lights to indicate the input is just below clipping. The adjustable output level allows you to increase the source line voltage to the top of your amplifier's input range; up to 7.5 volts RMS.

Terminal Block: The power terminal is removable; the wiring is attached to the block, then the block is plugged into the DQDX. Each terminal block will accommodate wire up to 12 gauge.

Specifications:

  • Maximum Output: 7.5 volts RMS
  • EQ Gain: +/-12 dB
  • Frequency Response: 10 Hz-22 kHz
  • THD: 0.01%
  • Input Impedance: 20 kΩ
  • EQ Frequencies: adjustable from -12dB to +12dB
    • Front/Rear: 125 Hz, 175 Hz, 250 Hz, 500 Hz, 1 kHz, 2 kHz, 8 kHz
    • Sub: 31.5 Hz, 40 Hz, 50 Hz, 63 Hz, 80 Hz, 100 Hz, 125 Hz,
  • Signal Delay:
    • Left/Right: 10ms max
    • Front/Sub: 35ms max
  • Crossover Frequencies: 50 Hz, 60 Hz, 65 Hz, 70 Hz, 75 Hz, 80 Hz, 85 Hz, 90 Hz, 95 Hz, 100 Hz, 125 Hz, 150 Hz, 175 Hz, 200 Hz, 250 Hz, 300 Hz, 400 Hz, 500 Hz, and defeat
  • Crossover Slope: 24 dB/octave (Linkwitz-Riley)
  • Output Impedance: 150 ohms
  • Current Draw: 350 mA
  • Recommended Fuse: 2 amp
  • Remote Trigger Output: 1 amp max
 
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AudioControl DQDX Reviews

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5 out of 5

Great Analog and Digital Processor

Written By Abraham Z., Kyle, TX on Saturday, March 22, 2014
Crutchfield Customer Review (What's this?)
 
This processor is one of a kind. You get the best of both worlds, analog equalizer and digital signal delay. The remote controller is unique that it tunes the signal delay and then flips to control subwoofer volume. I love the fact that you can "shift" the sound to the center of the car. Now I can hear more instruments in different places along the front windshield. The sub now sounds up-front now instead of heavily in the rear of the vehicle. The equalizer is simple to use, but now you can adjust the sound differences if you are using different brand speakers in your ride. What Crutchfield failed to mention in its description is this: AudioControl added a Subsonic filter that is switchable from OFF, 20Hz and 30Hz. Works perfectly if you have a ported, sealed or free-air subwoofer. Helps to avoid blowing out your sub. The one drawback that I find is that the front/rear eq section is overlapped with the subwoofer eq. My opinion, it is worthless to have 125Hz in the sub section unless you are using 6.5" for woofers and not anything larger. If you are using 10" or larger, then 125Hz and 100Hz are an over adjustment since most subwoofers don't play very well above 80Hz. Other than that, I love this new processor. I am currently using it in my Subaru WRX withPioneer AVH-X5600BHS head unit, Focal PS165's up front (bi-amp'd), Focal AS165;s in the rear and JL Audio 10w3v3-2 in the trunk.
Pros:
7 band adjustment per front, rear and subwoofer section, 7.5v RMS line driver output, remote controller that allows you to adjust from the front of the vehicle.
Cons:
Over lapping lower eq frequencies in the sub section.
4 out of 4 people found this helpful
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2 questions already asked

Hi I just bought the audio control dqdx and am having trouble setting it up read the manual twice and still got no where I hooked it up but the eq is flat I turn the knbos on the eq section but it doesn't sound any different, can someone please help me on what am doing wrong ? [ leston  Jul 11, 2014 ]
1 answer
  • If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer. You can also post your question in our forums: http://community.crutchfield.com. Or try our online support center: http://crutchfield.custhelp.com/app/answers/list/kw/. [ Krissy Staff  Jul 11, 2014 ]
currently have jl audio cleen sweep going to two jl amps...would dqdx raise my sq? (Oem 160w honda civic radio) [ will r  Jun 02, 2014 ]
3 answers
  • ty adrian and abraham. have installed the jl cleensweep with the oem radio, so i can keep all the factory phone and imid functions on my civic. i am really looking for a (pre-amp) equalizer. the factory hu has bass and treble and that b all. have jl jx500.1 (class D) for jl 10" sub. My jl xd400.4D is connected to 4 alpine type r 60 coaxials and two type r dome tweeters....sounds great but i want more control over the sq. any suggestions ? [ will r   Jun 03, 2014 ]
  • If you are using the factory radio, I would use the AudioControl DQ-61. It has speaker level inputs to eliminate knock down converters. Does the same as the DQDX. The AudioControl piece does not remove the factory eq curve, but fixes wasted bass with the Accubass function and signal processing. You are able to adjust the input signal as well as the output signal for a "hotter" signal to your amps. Be sure your amps can handle it or else it will cook the inputs. I adjusted my radio bass and treble to -6 and raised the AudioControl inputs to 1/2 way and outputs 3/4 open. This yielded the best clarity that I've had in a long time. [ ABRAHAM   Jun 03, 2014 ]
  • WR, I don't know that you can or would even want to use the CleanSweep with the DQDX, as the DQDX is a sound processor in and of itself. I installed mine in my 2013 Mustang GT and it greatly improved the SQ. The capability of the DQDX is amazing! I say remove the CleanSweep and install the DQDX. You won't be disappointed. Adrian [ Adrian   Jun 03, 2014 ]

For a more in-depth review and enhanced detailed information on the AudioControl DQDX, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_161DQDX/AudioControl-DQDX-Black.html ).

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