Bosch PRM-4P600 - Set the Energy Safe Option (APD); Ecorail

20 en | Installation Power amplifier
2023-01 | V02 | F.01U.402.247
Installation manual
Bosch Security Systems B.V.
5.1.4 Set the energy safe option (APD)
The APD (Auto Power Down) automatically places the amplifier into a low power standby
mode after a period of inactivity when signal, such as a music source, is not present for an
extended period.
The threshold level of the APD is -45dBu* and will automatically activate standby if the signal
is constantly below this level for 25min across all inputs.
The amplifier is woken from APD to full activity by:
– Signal source (music) above -40dBu threshold.
– Pressing the front panel power button.
– If configured, Remote ON wakes the amplifier from APD through a remote button.
APD is configured as either ON or OFF using the APD DIP switch at the rear of the device.
APD
AMP MODE
CH 1
CH 2
CH 1
CH 2
OFF
ON
100 V
4 Ω
8 Ω
70 V
LP
FLAT
HP 1
HP 2
DUAL PARALLEL CH 1/2
SPEAKER EQ
CH3
CH4
CH3
CH4
100 V
4 Ω
8 Ω
70 V
LP
FLAT
HP 1
HP 2
IN1 to ALL
OFF
ON
DUAL PARALLEL CH 3/4
AMP MODE SPEAKER EQ
*Activation level depends on several variables including the level controller position. -45dBu is
an estimate based on a 0dB position of the level control.
i
Notice!
For activating the device all input channels are monitored, regardless of routing switches or
level setting.
Refer to
– Indicators, controls and settings, page 16
5.1.5 ecoRAIL
ecoRAIL is a dedicated low‑voltage rail supply in the amplifier that significantly reduces power
consumption and increases power efficiency. ecoRAIL is permanently configured, so there is
no need to activate or set up this function.