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4 Use your power
amplifier
Select HPF/LPF mode
1
Slide LPF or HPF to the selected mode.
HPF (high-
80Hz
pass-filter)
OFF
LPF (low-
180Hz
pass-filter)
OFF
Adjust input level
To ensure sound quality, adjust input level to
match it with the car audio's output voltage.
1
Check the line output voltage of the
connected car audio.
2
Rotate INPUT LEVEL to select a matched
voltage: 0.3V to 6V.
More low frequency
signal is filtered. Select
this if you prefer less
bass effect.
More high frequency
signal is filtered. Select
this if you prefer
stronger bass effect.
Adjust bass boost
To enjoy more bass sound:
1
Set HPF at OFF mode.
2
Slide BASS BOOST to 12dB position.
Tip
•
BASS BOOST is set at 0dB position, no extra
If
bass will be boosted.
Note
•
HPF is set at 180Hz mode, the bass frequency
If
will be filtered.
About the protector
indicator
The amplifier has a built-in protection circuit to
protect the transistors and speakers in following
conditions:
•
The amplifier is overheated.
•
A DC current is generated in
speakers.
•
The battery voltage is too low or too
high. Or
•
The speaker terminals are short
circuited.
When the PROTECTED indicator
lights up in red, the amplifier shuts
down automatically. In this case
please:
1
Take out the disc or tape and turn off the
car audio.
2
Check the cause of the malfunction.
3
If the amplifier is overheated, let it cool
down.
EN
9
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