Digital Amplifier
- 2 -
II. APPEARANCE
2.1 Front panel
4-channel series
PRO
LIM
CLP
SIG
70V
0
1
2
3
4
5
6
7
8
9
10
CH1
Digital Power Ampllfier DA4XXX
ON
OFF
POWER
PRO
LIM
CLP
SIG
70V
0
1
2
3
4
5
6
7
8
9
10
CH2
PRO
LIM
CLP
SIG
70V
0
1
2
3
4
5
6
7
8
9
10
CH3
PRO
LIM
CLP
SIG
70V
0
1
2
3
4
5
6
7
8
9
10
CH4
1
2
3
2-channel series
PRO
LIM
CLP
SIG
70V
0
1
2
3
4
5
6
7
8
9
10
CH1
0
1
2
3
4
5
6
7
8
9
10
CH2
PRO
LIM
CLP
SIG
70V
Digital Power Ampllfier DA2XXX
ON
OFF
POWER
1
2
3
1. Indicator
PRO:
After being powered on and input with signal, if the protection indicator (PRO) and LIM
are on first, go out after a few seconds, and are on again, the output short circuit fault
occurs, and the above phenomena will repeat if the fault is not removed. Now, power off
immediately, and re-power on after troubleshooting.
LIM:
Limit indicator;
A. Both LIM and PRO are on: Amplifier is in short circuit or over-current protection.
B. LIM is on while PRO goes out: After the continuous repeated signal makes the output
power reach or exceed rated power for 2-4s, the power limits the start of circuit and halves
the rated output power automatically. This circuit will not be started with audio and music
applications under rated power.
CLP:
Clip indicator, please reduce the gain properly to avoid severe clip;
SIG:
Signal indicator (signal output);
70V:
Gear indicator, if it is on, the current gear is 70V output voltage.
2. Channel volume control knob
Name the volume control knob (CH1) by the number of channels with an analogy, such as CH1,
CH2;
3. Power switch
Power switch is provided with power indicator, when placing it in ON position, its internal
power indicator will be on.
