Digital Fusion TM Mobile Audio DQT tm Stereo One-Third Octave Digital Equalizer Owner’s Enjoyment Manual AudioControl ® 22410 70th Avenue West • Mountlake Terrace, WA 98043 USA Phone 425-775-8461 • Fax 425-778-3166 www.audiocontrol.
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Digital Fusion Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Features and Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Quick Installation Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 A Guided Tour of the DQT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AudioControl Owner’s Enjoyment Manual
Digital Fusion Introduction KEY FEATURES OF THE DQT Welcome to the world of Digital Fusion. The fusion of AudioControl’s lengthy experience in performance signal processing combined with state-of-the-art Digital Signal Processing (DSP) technology. Congratulations also on your purchase of the DQT, the world’s first thirty-band, one-third octave stereo and parametric, digital equalizer, utilizing AudioControl’s Digital Fusion technology.
AudioControl octave increments for maximum control. In addition each equalization filter utilizes precise constantQ topology, traditionally utilized only in the highest performing professional audio products. Parametric equalization controls: In addition to the thirty, one-third octave spaced controls, the DQT also offers two, fully-adjustable parametric equalization controls for each channel.
Digital Fusion Owner’s Enjoyment Manual ™
AudioControl A GUIDED TOUR OF THE DQT 1) Inputs: The DQT has two RCA inputs that need to get their audio signals from your source unit. If your source unit has multiple outputs (like a front, rear, and/or subwoofer) you only need to connect the front or rear outputs to your DQT. 2) Input Level: This knob allows you to maximize the signal level from your source unit that goes into your DQT to achieve maximum signal to noise.
Digital Fusion 10) Power Connections: This nifty connector is a godsend to anyone who has tried to wire up their gear with their body crammed in the trunk. You can wire up the power, ground, and remote turn-on from the convenience of outside your car and then casually plug it into your DQT.
AudioControl INSTALLING THE DQT Up to this point everything you have read has served to educate you on the operations of your DQT. We are sure that you are now chomping at the bit to install your DQT so we recommend you read the following sections very carefully. A. Placement and mounting of the DQT Placement: The DQT needs to be installed in the signal path after your source unit but definitely before your amplifiers and/or any other signal processors or active crossovers.
Digital Fusion Owner’s Enjoyment Manual ™
AudioControl planning out your system and even sketching it out on paper. The following diagrams are just a few of the system options: D. 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.
Digital Fusion DQT MENU SCREENS One of the major benefits of using Digital Fusion technology is the ability to use less knobs and buttons and get more control. The DQT has two mono 30 band graphic equalizers plus two stereo parametric equalizers. This is a stack of equipment that would normally fill your trunk. Digital Fusion technology allows the DQT to offer a plethora of features in one compact chassis.
AudioControl MODE: GraphicEQ Graphic EQ Freq = 1kHz L= +6dB >o< R =+4dB Figure 7: Graphic EQ screen Your DQT has 30 built-in graphic equalization filters with fixed, constant-Q, center frequencies. They just happen to match those on the AudioControl SA-3055 real time analyzer. In the GraphicEQ mode, you can select any of the 30 frequencies, one at a time and apply boost or cut.
Digital Fusion select a frequency, apply the proper amount of boost or cut, and change the bandwidth or “Q” of the filter. Para EQ1 mode allows you set the controls for one of the parametric equalizers. Para EQ2 lets you change the settings for the second parametric EQ band. Freq (uency): This corner of the screen shows which frequency you are boosting and cutting. If you wish to select another frequency, just tap the left or right arrow buttons until the cursor is flashing on the number next to “Freq.
AudioControl flashing next to Save. Push the “+” or “-” buttons to select the memory destinsation to where you are saving. Then use the left/right navigation buttons to move N(-) Y(+) display area. Tap the “(+)” button to complete the saving process or (-) to quit the memory saving process. MODE: Display Display Bright Dim Figure 12: Display screen In this mode, you have the ability to select between two levels of brightness for the display on your DQT.
Digital Fusion usually goes. Take a careful look at the “curve” on your analyzer and how one frequency combines with the next. There is no one curve that will satisfy every person, as we all have different tastes. How else can you explain Liberace or rice cakes? The key is to use your DQT to help balance your system from one frequency to the next and give your speakers the sparkle, sizzle, detail or punch that the acoustics of the car have compromised.
AudioControl area 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.
Digital Fusion 100 Hz, 125 Hz, 160 Hz, 200 Hz, and 250 Hz to control the area. Or you can use one parametric control centered at 160 Hz and set the bandwidth at 1 octave and you can perform a global adjustment of the entire midbass region. The other excellent use for a parametric band is very narrow cut of a problem area. The 1⁄12 and 1⁄6 octave band width allows this narrow fine tuning.
AudioControl UNDER THE COVER Beside all of the clever buttons on the outside of your DQT, there are a few factory preset functions, located under the cover, that assist in maximizing the performance of your DQT. To access these jumpers you will need to remove the 4 each top screws and carefully lift the chassis top. You will note that there is a ribbon cable that connects the display, mounted on the chassis top, to the main circuit board. Once under the cover, you will access to the following jumpers: 1.
Digital Fusion IF YOU LIKE DQT, YOU’LL LOVE... If you need a crossover for your system that keeps up with your DQT, another member of the Digital Fusion family is the DXStm, a 2 channel, 3-way crossover with breath takingly steep 24dB per octave slopes. If performance is important to you, then you will appreciate the DXS. The FOUR.1i is the perfect in-dash equalizer for those of you who like the sound and detail of the DQT but want to have some control of your system from the dash of your car.
AudioControl 4. You cannot let anybody who isn’t (A) the AudioControl factory; (B) somebody authorized in writing by AudioControl to service your DQT. If anyone other than (A) or (B) messes with your DQT, that voids your warranty. 5. The warranty is also void if the serial number is altered or removed, or if DQT has been used improperly. Now that sounds like a big loophole, but here is all we mean by it.
Digital Fusion DQT 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 weather . . . although we are working on it. Maximum input level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.5 Vrms Maximum output level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AudioControl MENU TREE Digital Fusion by AudioControl (r) Graphic EQ Freq=1kHz L = 6dB R = 4dB >o< Para EQ1 Width = 1/6 Freq=6.3k LVL = 12dB Para EQ2 Freq=3.15k Width = 2oct LVL = +8dB Memories Recall #7 Save © 2002, AudioControl, a division of Electronic Engineering and Manufacturing, Inc. USA. All rights reserved AudioControl, Making Good Stereo Sound Better, Digital Fusion, DQT, DXS, are all trademarks of Electronic Engineering and Manufacturing, Inc.
