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Input Level Adjustment
The overall sound quality of the PXE-H650 is determined by the adjustments made by the Digital
Signal Processor. The accuracy of these adjustments are directly affected by the input to the
processor. Therefore, it is very important that the output from the factory radio be properly set so
the PXE-H650 receives the correct audio level (not so high that it's distorted and not so low that
it's noisy). This ensures that the DSP chip in the unit can see every detail of the audio signal. This
important step is done during the initial stages of the Set Up sequence.
The input to the PXE-H650 is equipped with an auto-ranging circuit. This keeps the DSP input at
a constant level for better noise immunity and signal processing. It is suggested that the factory
head unit volume level be set at about
2
/
3
to
3
/
4
of its maximum volume. This position should be
remembered (mark the control in some way or remember the Volume number in the display) so if
it is ever moved, it can be returned easily to the same position. Other functions such as factory EQ
settings or position settings must also be turned off. Balance and Fader positions must be centered.
CAUTION
SETUP CD - Contents
H650 Setup Disc
1. Track - Auto range setup
This track is used with auto ranging to set input levels
2. Track - AntEQ setup
This track is used with AntEQ for factory pre-equalization removal
3. Track - Adjust Amp Levels
This track is used by the installer to make coarse adjustments to amplifi er levels.
6


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