4.1 FRONT PANEL
1. TONE CONTROL
Individual Bass and Treble controls are used
to cut(decrease) or boost(increase) the lower
and Higher frequ12dB.
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
12
11
15
16
17
18
20
21
13
5
19
MIN
MAX
MASTER
MIC4
LINE2
LINE1
MIC LEVEL
TREBLE
TREBLE
BASS
BASS
TREBLE
TREBLE
TREBLE
BASS
BASS
ZONE1
ZONE2
ZONE3
ZONE4
ZONE5
ALL CALL
2
4
8
0
CLIP
PROT
ON
OFF
TREBLE
BASS
BASS
MIC1
MIC2
MIC3
MIN
MAX
LINE LEVEL
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
AC
DC PWR
MIN
MAX
MIN
MAX
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
CHIME
SIREN
VOLUME
VOLUME
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
