8
Precautions Introduction Front Panel Rear Panel Operation and Performance
Speakon Output connectors
!
Refer to the instructions in this section if
your amplifier is equipped with the
speakon output connectors.
Two-channel amplifiers - Two-channel
amplifiers are wired in the following
manner. The right Speakon Channel A
and Channel B. This output is useful
when wiring the amplifier for bridged
mono operation. The left Speakon
connector provide an output for Channel
B only.
Connect the +and -loudspeaker cables
as shown in Figure 9.
Four-channel amplifiers - Additional
connectors are provided for Channel C
and Channel D. Channel C functions as
Channel A above, and Channel D as
Channel B above.
The outputs on The PWM-10000Q amplifier produce high voltage. Do not connect
or disconnect the loudspeaker cables while the mains power is on. Never operate
the amplifier with any portion of bare loudspeaker wire exposed.
NOTE
NOTE
Never connect an output terminal to ground, or to any other input or output.
Observe relative loudspeaker polarity: loudspeakers connected in reverse polarity
will exhibit degraded performance, particularly in bass frequence, and may be
damaged as a consequence.
Use a high-quality stranded loudspeaker cable, and keep cable runs as short as
possible.
Output bridge mode
It is possible to bridge channels in two-channel versions, or in pairs of two(A+B and C+D) in
four-channel versions. When bridged, the input source must be connected to input A(A+B) or
C(C+D) respectively. Output speaker cables must be connected to the plus pole on channel A
or C and the minus pole on B or D.
Most power amplifier designs, when bridged, automatically introduce a +6 dB input gain boost
which can lead the user to conclude that amplifier delivers “more than double the power”
when in bridge mode. This is clearly not the case, as the gain boost artificially enhances
perceived power at the cost of headroom. The PWM-10000Q amplifier works on globally set
constant gain, and automatically compensate the input gain by -6dB. For example, if the
amplifier is configured in a three-channel mode, then the selected gain is maintained from
input to output on all channels.
Figure 8
Speakon output-four-channel models
CH D CH C+D CH B CH A+B
1+ CH A+
1 - CH A -
2+ CH B+
2 - CH B -
SPEAKER OUTPUTS
1+ CH B+
1 - CH B -
WIRING NORMAL:CLASS 2 BRIDGED:CLASS 3
1+ CH C+
1 - CH C -
2+ CH D+
2 - CH D -
1+ CH D+
1 - CH D -
1+ : +
2 - : -
BRIDGE
1+ : +
2 - : -
BRIDGE
+
-
1-
2-
1+
2+
+
-1-
2-
1+
2+
+
-
1-
2-
1+
2+
+
-
Figure 9
Speakon wiring schematic
Channel A and B into
two separate Speakons
Channel A and B into one
Speakon (Stereo and Bi-amp)
Bridge mono
AMPLIFIER PWM10000Q
