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3.4 Cooling
Under normal operation of the power amp, overheating should never be a
problem. The air is taken in from the front and out through the back. It is of
course essential that while the power amp is running air is able to circulate
around it freely.
The effi ciency of the cooling will depend on the immediate environment (e. g.
an enclosed rack, direct sunlight) and on whether the front fi lter is clogged. If
the amp is installed in a case the open area at the back of the case must be at
least 140 cm². This area should be in line with the amp.
If this can not be achived a forced ventilation system has to be used.
3.5 Wiring
3.5.1 Input Connectors
XLR:
Euroblock connector:
Make sure to always use high-quality symmetrical (balanced) shielded cable to
ensure maximum audio quality.
Take special care not to use the two XLR and Euroblock input connectors of a
specifi c channel at the same time. This could lead to volume and audio quality
loss and could damage the connected signal sources.
P. 13
USER MANUAL
Q - P O W E R S E R I E S
Pin 1 = Ground
Pin 2 = Hot (inphase, +)
Pin 3 = Cold (out of phase, -)
Pin 1 = Hot (inphase, +)
Pin 2 = Ground
Pin 3 = Cold (out of phase, -)
Input D
Input C
-
+
-
+
3
3
1
2
1
2
1
In D
In C
Input D
Input C
Input B
+
-
+
-
+
1
2
3
1
2
3
1
In D
In C
3.5.2 Output Connectors
The two SPEAKON connectors are connected to the channel A to D power ampli-
fi er outputs. The pin confi guration of the SPEAKON-connectors is as follows:
Top Right:
Pin 1+
Channel A signal +
Pin 1-
Channel A signal -
Pin 2+
Channel B signal +
Pin 2-
Channel B signal -
Top Left:
Pin 1+
Channel C signal +
Pin 1-
Channel C signal -
Pin 2+
Channel D signal +
Pin 2-
Channel D signal -
Q - P O W E R
S E R I E S
Input B
Input A
-
+
-
+
3
3
2
1
2
In B
In A
Input A
-
+
-
2
3
1
2
3
In B
In A
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