08
4 Operating instructions
Before installation, make sure that the power cord is not connected to
the power outlet; the power switch is turn off; the volume knob is
completely closed (counter clockwise to the limit).
4.1 Protection speaker
Clipping not only make sound distortion, but also damage the tweeter, you can reduce the
input signal to avoid clipping.
Strong sub signal will cause the speaker burned. The high level low frequency signal caused
by the falling of the microphone is a typical sub acoustic signal. One of the following ways to
prevent sub sonic signals should be used:
a、Installing a high pass filter between the mixer and amplifier.
b、Turn on the high pass filter in the mixer. Without affecting the use, the filter frequency is
set as high as possible. For example, for the music signal is set to 35Hz, for the microphone set to
75Hz.
4.2 Attention
In order to achieve the best performance and the highest security, please pay attention:
1、Before use, you need to configure the amplifier, including the input and output lines.
Improper wiring will lead to the equipment can not work properly. For information about connection
and configuration, please refer to the “installation” section of this manual.
2、Be careful when connecting, selecting the input signal and controlling the output level.
This can avoid unnecessary trouble.
3、 Do not connect the ground wire of the input and output cable together . This will form a
ground loop and cause oscillations.
PROFESSIONAL POWER AMPLIFIER
SUN ON
PMD1 204PQ BX-A
(2).B 2220. GN
DC12 V —8.0W
SUN ON
PMD1 204PQ BX-A
(2).B 2220. GN
DC12 V —8.0W
SUN ON
PMD1 204PQ BX-A
(2).B 2220. GN
DC12 V —8.0W
SUN ON
PMD1 204PQ BX-A
(2).B 2220. GN
DC12 V —8.0W
SUN ON
PMD1 204PQ BX-A
(2).B 2220. GN
DC12 V —8.0W
SUN ON
PMD1 204PQ BX-A
(2).B 2220. GN
DC12 V —8.0W
SUN ON
PMD1 204PQ BX-A
(2).B 2220. GN
DC12 V —8.0W
SUN ON
PMD1 204PQ BX-A
(2).B 2220. GN
DC12 V —8.0W
CH-A
CH-B
CH-A
2+
1-
2-
1+
+
-
CH-A
+
-
8Ω
4Ω
2Ω
8Ω
4Ω
2Ω
2+
1-
2-
1+
+
-
CH-B
8Ω
4Ω
2Ω
CH-B
CH-B
CH-A
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