Orion Car Audio DEQ 30 manual Setting Analog Input Levels, Is now set

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SETTING ANALOG INPUT LEVELS

1.

Install DEQ 30 into your system.

2.

With your source unit volume control set at a low

 

position, test the function of the system. Once

 

satisfied proceed to the next step.

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DIGITAL TOSLINK

3.

Turn the gain controls of the DEQ 30, your

 

amplifiers and other components in your system

 

to their minimum positions.

4.

Cue up the reference CD to the track with the 1

 

kHz test tone at “all bits high”. This is also

 

referred to as ”0dB.” If you do not have a CD

 

player, see Non CD Setup.

5.

Set your volume on your source unit to 3/4

 

volume.

6.

Slowly turn up the gain controls on the DEQ 30

 

until you can hear the pure tone. HINT! The

 

lower the initial volume the better.

7.

Turn up your volume of your source unit until the

 

output of the pure tone becomes distorted

 

(sounds like fuzziness in the tone) and then turn

 

back down until you hear a pure tone again. The

 

maximum undistorted output of the source unit

 

is now set.

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12

Absorption/Reflection Related Non-Linearity Problems are caused by the interaction of speakers with the interior acoustics of the vehicle. Examining the speaker mountings and locations may give clues to potential problems and potential solutions. Be sure the speakers have an un-obstructed path to the listening position. Any object in the speakers path will affect the sound quality of the system.

Non-Equalizer Solutions

Examine the surrounding of the speaker. If any object blocks the path of the speakers remove it. If this is not possible, minimize the effect of the obstruction by applying a type of absorption material on the object like felt or high density fiberglass. Install the absorption material in the path between the speaker and the obstruction so as to minimize the effect. If the rear of the speaker (midrange or woofer) is close to a reflective panel, place damping material between the speaker and the reflective baffle. Also if any frequency response errors occur near crossover points, try changing the speaker polarity of the speaker or try using different crossover frequencies.

Equalizer Solutions

Use the DEQ 30 first as a cut only device to try to smooth out the non-linearity of the system. Cut frequencies gradually starting with the center point of the problem area. Do not cut the centered band to get the frequency response to the flat position for it will dip below when you change adjacent bands. When boosting the DEQ 30 is required, take care not to exceed the maximum undistorted output level of the DEQ 30. For reference, an illuminated “Clip” LED indicates that the maximum output level has been exceeded. Periodically listen to your system during this process to make sure that the changes improve the system’s advanced equalization.

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Contents DEQ 30 Manual Introduction WHAT’S in the BOX Technical Overview WarrantySpecifications Analog Output Section Power SupplyDigital Outputs Lock ANTI-JITTER Reduction Circuit11 12 Call OUT FeaturesInstallation Trouble ShootingTools for the Trade Power Connections Corrected Response OEM Integration With Balanced Inputs Analog InputsTime Alignment Error Problems Is now set Setting Analog Input LevelsClip LED Illuminates When Input is Overloaded ABSORPTION/REFLECTION Related NON-LINEARITY ProblemsDigital Inputs Selecting Digital Inputs ROLL-OFF Response ProblemsAnalog and Digital Outputs OFF-SCREEN Response Problems Digital Display User InterfaceCrossover Points & Speaker Polarity Phase Shift Problems User Interface LED IndicatorsUser Interface Controls Output Level Incompatibility Problems Preparation for Equalization Basic EqualizationConstructive & Destructive Interference Problems Basic Equalization Resonance Problems Perfectly Flat Curve Advanced Equalization