AUX
Indicators
It is acceptable for the LIM indicator to flicker from time to time because the built in clip
limiter prevents distortion. If it is lit continuously, you are at risk of the degradation of your
speaker output. In that case, the volume level has to be reduced. The limiter threshold can be
edited in the OUTPUT SETTINGS menu, please refer to section Menu, page 26.
Below the LIM indicator, the PM 502 offers a 3-segment LED chain for visual monitoring of the
output level of the signal. The meter’s 0 dB mark is referenced to a 0 dBu output signal at the
mixer output.
VOLUME control
The VOLUME control sets the volume of the summed audio signal at the AUX OUT output. The
signal present at this output can be selected in the AUX routing menu, please refer to section
Menu, page 26.
MASTER
Indicators
It is acceptable for the LIM indicator to flicker from time to time because the built in clip
limiter prevents distortion. If it is lit continuously, you are at risk of the degradation of your
speaker output. In that case, the volume level has to be reduced. The limiter threshold can be
edited in the OUTPUT SETTINGS menu, please refer to section Menu, page 26.
Below the LIM indicator, the PM 502 offers a 3-segment LED chain for visual monitoring of the
output level of the signal. The meter’s 0 dB mark is referenced to a 0 dBu output signal at the
mixer output.
VOLUME control
Level controls to adjust the output signals of the left and right master outputs (MASTER A or
MASTER B). If post mode is selected for MASTER B (see section Menu, page 26) set the
MASTER B level control to its middle position for identical levels on MASTER A or B outputs.
Microphone processing
During operation the audio signal processing can be adjusted by using the switches
COMPRESSOR, TALK OVER or MUTE, this settings always affect the input signals of all MIC/
LINE channels. The current status is indicated by the corresponding LED next to each button.
Advanced microphone processing settings are available in the menu, please refer to section
Menu, page 26.
7.4
7.5
7.6
24 en | Operation PM 502
15-May-14 | 02 | F01U297804 User manual Bosch Sicherheitssysteme GmbH