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4
Gain Control
If the sound level is too low, even when the volume of the car stereo used along with this
power amplifier is turned up, turn gain control clockwise. If the sound distorts when the vol-
ume is turned up, turn the gain control counter-clockwise.
• When using with an RCA equipped car stereo (standard output of 500 mV), set to the NORMAL
position. When using with an RCA equipped Pioneer car stereo with max. output of 4 V or more,
adjust level to match the car stereo output level.
• For synced amplifier’s gain control, see the “Setting the Gain for synced amplifier” sec-
tion.
Power Indicator (Blue)
The power indicator lights when the power is switched on.
BFC (Beat Frequency Control) Switch
If you hear a beat while listening to an MW/LW broadcast
with your car stereo, change the BFC switch using a small
standard tip screwdriver.
Subsonic Select Switch
The subsonic filter cuts inaudible
frequencies below 20 Hz to eliminate
unwanted vibrations and minimize
power loss.
PROTECT Indicator (Red)
This indicates a problem with the amplifier. See the “Troubleshooting”
section on page 17 for details.
HEAT Indicator (Yellow)
This indicates a problem with the amplifier. See the “Troubleshooting”
section on page 17 for details.
