Bosch PRM-4P600 - Operation after Installation; Power on; Input Level Control

Power amplifier Operation after installation | en 27
Bosch Security Systems B.V.
Installation manual
2023-01 | V02 | F.01U.402.247
6 Operation after installation
6.1 Power on
The device can be activated by pushing the power button on the front panel. Speaker system
switch‑on is delayed by approximately three seconds via output relays, effectively suppressing
any possible power‑on noise, which otherwise might be heard through the loudspeakers.
– See also Remote on, page 26 .
6.2 Input level control
Adjustment of amplifier to source.
– Default is middle position. Full clockwise spends additional 6dB to drive the amplifier
even from weak sound sources.
The level control is assigned with the physical input, not the output channels. If routing
PARALLEL or IN1 to ALL is used, the level control is same for all 4 channels.
i
Notice!
The level control of the unused input is ineffective. If however independent level control is
desired, the DUAL routing should be used instead and the inputs wired as parallel.
Refer to
– Indicators, controls and settings, page 16