9
1
POWER
Main switch with LED indicator.
2
MASTER
Main level control.
3
BASS AND TREBLE TONE CONTROLS
The BASS control is used to adjust the low frequency band, the TREBLE control is used to adjust the high
frequency band. T
he control’s range is -10 dB to +10 dB for each band.
Turning the knob to the right boosts
the corresponding frequency band, while turning to the left attenuates the band. Adjust the controls to
obtain the best intelligibility and equalization for your audio system.
4
INPUT 1 – 4 LEVEL
Level controls of the corresponding rear input, which can be either a microphone or a line level device
(see point 17).
5
LED INDICATOR
SIG
: indicates the presence of an output signal.
-10dB
: indicates a normal output level.
CLIP
: indicates that the input signal is too high and the amplifier is starting to limit the signal.
PROT
: indicates that the amplifier is in protection and no signal will be reproduced from the outputs. The
amplifier may have a shorted output or has overheated due to incorrect use.
ON
: indicates that the device is turned on.
For a correct operation, the -10dB LED should light up often and CLIP LED should light up rarely. If the CLIP
LED stays always on, turn down the MASTER level or the corresponding INPUT level control.
6
ZONE 1-4 LEVEL CONTROLS
These LEVEL controls set the output volume for each corresponding zone with 6 steps. These controls
operate as attenuators starting from the MASTER LEVEL, so position 5 corresponds to full output while
position 0 corresponds to the zone muted. The attenuation steps are the following:
STEP
5
4
3
2
1
0
Attenuation
0
-3 dB
-6 dB
-12 dB
-18 dB
- inf.
Pwr ratio
1
1/2
1/4
1/16
1/64
inf.
NOTE: each ZONE LEVEL control acts exclusively on the corresponding 100V ZONE OUTPUT (9).
NOTE: when a paging call is made using the dedicated PA RM4 base, the zone volume controls will be by-
passed and the message will be played at the volume set by the PA RM4 base and by the MASTER control.
7
ZONE 1-4 SELECTOR
Using these keys, you can select the zone output where you want to direct audio program.
NOTE: these controls act both on the Zone outputs at 100V (9) and on the zone outputs at line level (11).
NOTE: when a paging call is made using the dedicated PA RM4 base, the zone selectors will be by-passed
and the message will still reach the zone or group of zones selected on the base, temporarily silencing any
background music.
Summary of Contents for ATMP240ZXL
Page 2: ...2 ...
Page 8: ...8 MAIN PANEL OPERATIONS ...
Page 22: ...22 SETUP EXAMPLE 1 ...
Page 23: ...23 SETUP EXAMPLE 2 ...
Page 30: ...30 OPERAZIONI PANNELLO PRINCIPALE ...
Page 44: ...44 ESEMPIO DI CONFIGURAZIONE 1 ...
Page 45: ...45 ESEMPIO DI CONFIGURAZIONE 2 ...
Page 47: ...47 ...
