About the AudioControl DQDX
Fine tuning your ride
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.
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.
- 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
- MFR # 841-075-8
What's in the box:
- 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
AudioControl DQDX reviews
Love the DQDX! With it I was able to tune the sound from my 2013 F-150's stock radio just the way I want it. For a while I was getting the loud popping noise through the speakers that others have mentioned, even though I had my amps wired to the DQDX's remote signal output terminal as recommended. The solution was to set the internal J9 Input Balancing Jumper to 'Balanced'. No more popping!
Pros: Customizable, clean sound.
1 of 1 found this helpful
Great product. Made the system sound impressive.
Pros: Sound quality it there. Very impressive.
0 of 0 found this helpful
Simply awesome! You will not be disappointed with the DQDX. This transformed my system completely. The level matching is key ... then the delay and eq. The ACR-3 remote is excellent. Great product from AudioControl!
Pros: Sound quality, level matching, eq control, acr3
1 of 1 found this helpful
This product is simply amazing. I can easily say this has improved my listening experience by 100%. I will probably be buying another and would definitely be interested in DQDX type device with 13 bands of equalization.
Pros: Firstly, the line driver functionality has significantly increased the output of my amplifiers without any increased distortion. Secondly, the equalizer has helped me quell most of the significant resonant frequencies and killed most of the chassis induced noise.(with the use of an RTA). Thirdly the time alignment did help me move the sound stage.(still tweaking that configuration) The only potential improvement would be inclusion of more tunable equalization bands.
Cons: I have a spike at 8k that I was unable to address with the DQDX.
0 of 0 found this helpful
The equalizer portion has given me better control of the sound quality of my connected Satellite Radio (Onyx Plus running thru the aux. port of my car). Due to the fact that almost every channel on the Onyx Plus sounds different from the other, I am still (2 weeks after installation) trying to find a balance between music channels and Howard Stern). My only issue with the EQ portion is that the lowest frequency adjustment for the front & rear channels is 125Hz. Would've preferred to see something in the 80-100 Hz range. The DSP portion has raised my sound stage up to dash level, and more centered. Again, still trying to find that balance of delay between left and right speakers, and also front to sub. My 5 channel Kicker amp is currently only feeding my front components and my subwoofer. The rear speakers in my Jetta are currently fed off of the radio. I had a slight delay between the front speakers and the subwoofer which was appealing for music, but not for listening to Stern. I will keep tweaking as the time passes to find that sweet spot.
0 of 3 found this helpful
The amount of THD was noticeable at lower volumes. I have Alpine head unit, amps and sub. Unless the music has it U dont hear any distortion. Not sure if unit was defective but seemed that unit was clipping on rear speakers though input max indicator never lit up... Am returning unit
Pros: Ability to independently adjust front , rear and sub frequencies
Cons: Level of THD was noticeable at lower volumes .
2 of 7 found this helpful
Having used AudioControl products for years in my car audio setups, I had great expectations for this product. Unfortunately, it didn't live up to the standards I expected. Most AudioControl gear is all-analog and can handle input voltages of 9v or more (some handle up to 13v before clipping). This thing can barely tolerate 2v max. Beyond that, it doesn't clip, it just blanks out completely on whatever channel is running too high. When I called AudioControl to inquire, they explained that this product doesn't work at an analog level like all the rest of their gear. To do all the fancy stuff it does (mostly the time delay), it converts the analog signal to a digital one. It then converts the processed output back to an analog signal. The DACs they use to do this have a very low tolerance for input level, hence the lame max allowable signal input voltage. This is really awful if you're running a high voltage line driver, a dash-mount AudioControl EQ or a head unit that happens to have decent output voltage like 5v, because you essentially have to downgrade your signal strength just to accommodate this processor. Also, because of the AD/DA conversion going on, you're basically murdering your signal with a lot of extra processing. This is terrible if your source material is 24bit/96+khz, because the input DAC in this unit cripples it to 16bit/44.1khz (possibly 48khz, I can't confirm). I returned this and got a high end head unit that can do time delay instead.
Pros: Lots of neat features, small size, AudioControl is a great company to deal with.
Cons: Very low signal input voltage tolerance, essentially destroys the audio signal by converting it twice, with a low-grade internal digital pathway. None of the existing AudioControl crossover or PFM modules can be used with this unit because the controls are on-board and work at a digital level. This completely kills the usual flexibility of AudioControl components since the built-in controls have a limited range.
22 of 23 found this helpful
If I could give it half a star I would , I had four different ones, each with its own problems ,from sub outputs to remote knob to time alignment issues ETC.Going for price point was a wrong move for me , I got what I paid for . Audio Control has great customer care but that is all I wouldn't use this thing as a paper weight .
Cons: Read Above Comment
1 of 5 found this helpful
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.
16 of 18 found this helpful
More details on the AudioControl DQDX
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.
- 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
- 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
Q Crutchfield asked: Why did you buy this?
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