Power Level Adjustment - Toa DA-1250D-AS Operating Instructions Manual

8. POWER LEVEL ADJUSTMENT

Procedure
P ower on
Source Sound console
Power Level Adjustment
Power amplifier should be in the condition of no load in the following
adjustment process:
Process:
12
LINE
GAIN
0
- 10 +40
GAIN
Input the Put the line
stable pink
output to 0dB
noise
Adjust input
gain
Processor
CLIP
0
0
3
6
9
12
15
-
+12d B
18
40
OUTPUT
LEVEL
Adjust the output level of
processor, the range like
the above picture shows.
Music Audition
Adjust the volume from very small to loud slowly, after you confirm
the sound is normal then make it more louder. When the speaker
output is close to its limit, the CLIP light will lights up and you
should turn down your volume now, don't let the CLIP lights on long
time, it means over load, may damage the system.
10
Peripheral devices
Mixer
12
0
CH MAIN
Put the main
output to 0dB
Amp
LEVEL
Adjust the volune knob
and make the output level
within the range as above
picture shows.
Power Amplifier
Power off
Processor
CLIP
CLIP
12
6
3
0
3
6
12
20
40
INPUT
LEVEL
LEVEL
The main output
Adjust the
amplitude set
input level of
should be
pr ocessor lik
displayed
the above
as: 0dB
picture
Mixer
CLIP
LINE
12
6
GAIN
3
0
3
6
- 3d B 12
-10
+ 40
20
40
GAIN LEVEL
Then adjust the input
gain to make the main
output less 3dB.
This setting is to ensure
twice power.
NOTES:
For high power system, the
Power-on order is very
important,not in the order is
likely to damage the
equipment.Therefor we
suggest that you use the
sequence power device.
NOTES:
This is a normal step to
0 adjustment, for more
3
6 professional adjustment you
9
should have a professional
12
15
person to do that.
18
40
NOTES:
This step should operated by
professional person, if you
don't know how to do, please
be careful!