USB 7132 / 7133 / 7134
Professional Power Amplifier
FEATURES
1. Rack Mounting Ears
Two front-panel mounting holes are provided on each mounting ear.
2. Channel Level Attenuator for CH 1
The input attenuator adjusts level for CH 1. In bridged mono the channel 1 attenuator , controls
overall signal level.
3. Channel Level Attenuator for CH 2
The input attenuator adjusts level for CH 2. In bridged mono , the channel 1 attenuator controls
overall signal level.
4. Clip
This light is in fact rather more sophisticated than a simple clip indicator; it actually measures dis-
tortion. This may occur either due to clipping, trying to drive too low an impedance speaker load or
any other mechanism that causes the output of the amplifier channel to not be as expected by the
monitoring circuit. The green light turning to red indicates clip.
5. Bridged Stereo Indicator
A green LED lite indicates a bridged stereo mode is on. A red LED lite indicates a mono mode is on.
6. Power Switch
This switch turns the amp on and off. If the amp doesn't turn on when the switch is in the ON posi-
tion, check the circuit breaker on the rear panel.
7. Power Protection LED
A green LED lite indicates power is ON. A red LED lite indicates power protection mode is ON.
8. Fan Outlet Grill
PA 200/300/500 amplifiers are cooled by a single rear-mounted fan. Cool air flows over the heat
sink and exhausts through the f ont grill. Make sure thi outlet remains clear to r s allow unrestric-
ted airflow.
© US Blaster Europe BV
