4.1 FRONT PANEL
1. TONE CONTROL
Individual Bass and Treble controls are used
to cut(decrease) or boost(increase) the lower
and Higher frequencies +12dB.
2. CHANNEL VOLUME
Controls the individual volume levels of Cha-
nnels.
3. ALARM INDICATOR
4. ALARM BUTTON
Press the bell button bell light, a bell indicating
the input signal output; bell signal conditioning
potentiometer can adjust its output volume.
5. ALARM POTENTIOMETER
6. BELL SIGNAL POTENTIOMETER
7. BELL SIGNAL BUTTON
Press the alarm button, alarm light, alarm
indication signal input with the output; alarm
signal conditioning potentiometer can adjust
the output volume.
8. BELL SIGNAL INDICATOR
9. MASTER VOLUME
This rotary switch controls the overall output
volume of the amplifiers output signal.
10.DC INDICATOR
24V DC supply power the indicator on
11.POWER SWITCH
Pressing this switch turns the unit on, as ind-
icated by the Power LED above the switch.
Pressing it again turns the unit off.
4. NOMENCLATURE AND FUNCTIONS
12. AC INDICATOR
~220-240V AC supply power the indicator on
13. POWER SWITCH INDICATOR
14. SPEAKER SELECTOR
These switches are used to select output to
any combination of up to five individual
speakers.
MIN
2
12.5V 6V
OUTPUT
VOLTAGE
120W
240W
350W
6V
6V
12.5V
12.5V
3
4
5
70V 50V
22V
32V
38V
50V
50V
70V
70V
MAX
100V
100V
100V
15. (ZONE1~ZONE5)ZONE SELECTION BUTTON
16. (ZONE1~ZONE5)ZONE SELECTION INDICATOR
17. ALL CALL INDICATOR
18. ALL CALL CONTROL
19. CLUP INDICATOR LED
20. OUTPUT LEVEL INDICATOR LED
21. PROTECT INDICATOR LED
5
2
14
6
1
3 4 7 8
9
10 1211
151617182021
135
19
MIN MAX
MASTER
MIC4 LINE2
LINE1
MIC LEVEL
TREBLE TREBLEBASS BASSTREBLE TREBLE TREBLEBASS BASS
ZONE1
ZONE2 ZONE3 ZONE4
ZONE5
ALL CALL
2 4 8 0 CLIPPROT
ON
OFF
TREBLEBASS BASS
MIC1
MIC2 MIC3
MIN MAX
LINE LEVEL
MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX
ACDC PWR
MIN MAX MIN MAX
10 10 10 10 10 1010 1010 1010 1010 1010 1010 1010 1010 1010 10
CHIMESIREN
VOLUMEVOLUME
1
2
3 4
5
6
1
2
3 4
5
6
1
2
3 4
5
6
1
2
3 4
5
6
1
2
3 4
5
6
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