Install guide

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Six Channel Pre-amp Processor with Signal Delay, Equalization and

Selectable Electronic Crossover

The DQDX is your gateway to amaz-

ing sound from any aftermarket audio

system. It is a compact, six channel,

high-performance signal processor with

independent multi-channel equaliza-

tion and signal delay to custom tune

the system plus a selectable electronic

crossover for precise system set-up.

In short; the DQDX can “Make

Good Sound Great”!

Making Good Sound Great

Key Features of The DQDX

Here are some of the unique features of the AudioControl DQDX:

• User-friendly Signal Delay to control the acoustical alignment between the

left and right channels plus the front and subwoofer channels

• Individual equalization controls for the front, rear and subwoofer channels

for simple yet precise system tuning

• Fully adjustable 24dB/Octave Linkwitz-Riley electronic crossover

• PFM (Program Frequency Match) Subsonic Filter

• Six channels of RCA line level inputs

• ACR-3 Dash Control Remote allows for control of the subwoofer level

plus processing bypass

• Discrete Input and Output level controls with clipping indicators

• Remote turn on output provides a 12-volt trigger to turn on

your amplier

• Built in Pink Noise for easy Signal Delay and Equalizer tuning

and system set-up

• Bulletproof 5 year warranty

(when installed by an authorized AudioControl dealer)

Summary of content (18 pages)

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Six Channel Pre-amp Processor with Signal Delay, Equalization and Selectable Electronic Crossover The DQDX is your gateway to amazing sound from any aftermarket audio system. It is a compact, six channel, high-performance signal processor with independent multi-channel equalization and signal delay to custom tune the system plus a selectable electronic crossover for precise system set-up.
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Quick Install Guide If you are a seasoned audio enthusiast and are chomping at the bit to begin your experience with the DQDX, we offer some Quick Install Guidelines below to help maximize your experience. Please refer to the system diagrams on page 8 as good guidelines. 1 Physically mount the DQDX in a location that keeps it away from beverage spills, food crumbs, and curious fingers. You will want to select a location that allows you access to the top panel controls.
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On the chassis, change Signal Delay Mode back to Normal. Set the equalization controls for the front, rear, and subwoofer channels. While your ears are a good reference point, we recommend using an audio analyzer whenever possible. To engage the pink noise output of the DQDX for help setting up the equalizer, press and hold the ACR-3 remote knob down for about four seconds. This will switch the outputs of the DQDX from music to Pink Noise.
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➍ ➎ ➌ ➋ A Guided Tour of DQDX ➊ 1 RCA Line-Level Inputs - The DQDX has six RCA line level inputs. These inputs get their signals from the RCA outputs of your source unit. If your source unit has front, rear, and subwoofer RCA Line Level outputs, connect them to the three sets of corresponding inputs on your DQDX.
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➓ ➒ ➑ ➐ ➏ 3 Equalization Controls - To custom tune your system, the DQDX gives you dedicated equalization controls for the Front, Rear, and Subwoofer outputs. See the section on Equalization Optimization on page 10 for a more detailed description on how to set these adjustments for optimum performance.
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5 Signal Delay Mode - This allows the user to put the DQDX into Set-Up mode and adjust the signal delay settings using the dash control. See page 9 for details on setting this up. 6 Ground - Connect to a good, verified chassis ground (the battery is the best possible location.) Since factory ground wires typically have multiple devices connected to them and could cause ‘Noise’ in the audio system, we would recommend to NOT use factory ground wires or locations.
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Under the Covers - Internal Jumpers You can optimize your DQDX using most of the controls mounted on the top of the chassis. However, we recognize there are situations where advanced users may have the need to configure the DQDX for specific applications. Therefore we have provided a few setting that are located under the chassis top for limited access. 1 Input Balancing Jumper: For many systems you can leave this jumper in the UNBALANCED position.
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Basic DQDX installation using 4 channel input and 6 channel output Typical DQDX installation Using a DQDX and The Epicenter from AudioControl to achieve maximum sound quality and bass page 8
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Great Features of the DQDX Signal Delay Operation Because of speaker placement limitations and seating positions in a car, the driver of the vehicle is in an incorrect acoustic alignment with the speakers. The following steps will guide you in delaying the appropriate speakers for just a few milliseconds, so the DQDX is able to allow the different signals to arrive at the same time putting the driver in perfect acoustical alignment. 1 For best performance and ease of set-up, go to our website at www.
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5 Left / Right Delay Push on the dash remote until the blue LED is blinking and the red LED is solid. With the source material playing, slowly turn the dash control knob COUNTER CLOCKWISE. Each detent in the remote represents an amount of time (in milliseconds) that you are delaying the Left Front Speaker. We have added a small Mute Click along with the detent on the remote to help you determine your amount of delay. Keep in mind that if you think you have gone too far you can always start over.
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good one. If you cannot locate an RTA, you probably want to have your authorized AudioControl dealer perform the equalization adjustments since they will have one. You can certainly adjust your DQDX using your ears, however, using an RTA will give you the best results. 2 Begin playing pink noise through your system by pressing and holding the ACR-3 remote button down for 4 seconds.
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of the audio spectrum that is an octave above your sub-bass frequencies and several octaves below your midrange. Most autosound systems have too much midbass due to the fact that speakers mounted in the doors or kick panels cause resonance’s or peaks in the response curve. These peaks in the midbass can actually mask or block sounds in the all-important midrange area causing your system to sound dull or lifeless.
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Pos Freq 2 3 4 5 6 7 8 9 7:00 pos, full left rota50 tion 50 60 65 70 8:30 pos 75 80 85 90 10 95 11 100 1 Pos Freq 12 125 13 14 15 16 17 18 19 20 150 175 200 250 300 400 500 defeat 21 defeat 1:00 pos 3:30 pos 5:30 pos, full right rotation Level Matching If you have ever listened to a friend’s “killer” car audio system and heard lots of hiss, clicks or pops, then you have experienced an improperly level-matched system.
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7 At his point you can adjust your amplifier gain control according to the specifications of your amplifier manufacturer. Parallel Outputs The DQDX is equipped with AudioControl’s unique Front to Sub circuit input that allows for the Front input signal to feed the Subwoofer outputs, when you do not have a Subwoofer input signal available. This allows your DQDX to accept front and rear inputs channels and give you Front, Rear, and Subwoofer output channels.
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and rotary control from the bracket. Drill a 9/32 hole in the dashboard for the control along with a 1/8 hole for the lock tab and a 13/64 hole for the LED holder. Reassemble the dash control components on the dashboard. Block Diagram of the DQDX Feeling lost? Here’s an internal “roadmap” to help you out. This simplified block diagram is a map of the paths your signals take inside the DQDX. With this diagram you can follow each input through the processor.
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The WARRANTY People are scared of warranties. Lots of fine print right? Well, fear no more, this warranty is designed to make you rave about us to your friends. It’s a warranty that looks out for you and helps you resist the temptation to have your friend, “...who’s good with electronics”, attempt to repair your AudioControl product. Go ahead and read this warranty, and then take a few days to enjoy your new DQDX before going on line to register your unit at www.audiocontrolregistration.com.
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really isn’t all that hard to do, we get the option of fixing your old unit or replacing it with a new one. LEGALESE SECTION This is the only warranty given by AudioControl. This warranty gives you specific legal rights that vary from state to state. Promises of how well the DQDX will perform are not implied by this warranty. Other than what we have covered in this warranty, we have no obligation, express or implied.
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DQDX SPECIFICATIONS All specifications are measured at 14.4 VDC (standard automotive voltage.) As technology advances, AudioControl reserves the right to continuously change our specifications, like our Pacific Northwest weather although we are working on it. Maximum output level................................................................ 7.5Vrms Output attenuation..................................................................... +/-12 dB Frequency response............................................