Alpine PXA-H510 - RCA Input Level Adjustment

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Basic Operation
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Using the RCA-type audio
inputs
Adjusting the input level
When using RCA-type inputs, the output level
from the head unit must be fixed and the PXA-
H510 will be used to control the volume. To
adjust the head unit output for optimum
performance of the PXA-H510, use a source
with a high recording level (pop, rock, etc.).
Turn on the head unit’s power.
Press the “ ” key on the PXA-H510 and set the
level to “0”.
Gradually increase the volume of the head unit.
Increase the volume until the “OVER” indicator
lights, then decrease it slightly. After doing this,
never change the volume of the head unit.