QSC CMXa Série Mode D'emploi page 12

Bridge Mono Mode
This mode combines the full power capabilities of both channels into a single speaker system. The
amplifi er internally re-confi gures so that both channels operate as a unit. This delivers double the
output voltage, resulting in four times the peak power and three times the sustained power into a
single 8 or 4 speaker load. The Bridge Mono mode section on
loudspeaker connection used.
Examples:
• Driving a single 8 speaker with the combined 4 power of both channels.
• Driving a single 4 speaker with the combined 2 power of both channels.
Precautions:
• Bridge Mono mode makes it possible to drive thousands of watts into a single speaker. AC
current consumption will usually be higher. Avoid excessive signal level, and make sure the wiring and speaker can handle the power.
• If the load is 4 or less and prolonged overloads occur, the amplifi er will probably mute for several seconds during peaks, and the circuit
breaker may trip.
• Do not use 2 loads.
• Ensure Channel 2 dip switches are set to off
EN
NOTE: See the additional Bridge Mono precautions on
Distributed Constant Voltage Outputs
Please refer to the above section on Bridge Mono mode for proper setup
confi guration.
70/100 Volt Operation:
• The CMX 300Va and 500Va must be confi gured for Bridge Mono mode for 70
Volt operation.
• The CMX 800Va and CMX 2000Va can operate in 70 Volt operation in Stereo
mode or Bridge Mono mode.
• The CMX 500Va and CMX 800Va must be confi gured for Bridge Mono mode
for 100 Volt operation. Please refer to the Bridge Mono mode section for proper
setup confi guration.
The CMX 2000Va can operate in 70 Volt or 100 Volt operation in STEREO mode or
BRIDGE MONO mode..
Stereo Mode (Both Channels Driven)
70 Volt
100 Volt
Bridge Mono Mode
70 Volt
100 Volt
(— Figure 20), and Channel 2 attenuation control is set to maximum attenuation.
CMX 300Va CMX 500Va CMX 800Va
- -
- -
600 W 1200 W 2000 W
- 600 W 2300 W
— Table 2 —
page 10 describes the special
page 10.
CMX 2000Va
400 W 2500 W
- 1000 W
5000 W
3600 W
12
Set Channel 2 dip switches,
8 and 10, to off.
— Figure 20 —
Channel 1 Input, Channel 2 Not Used
— Figure 21 —
Channel 2 Can Be Used to
Daisy-chain to Other Amplifi ers.
— Figure 22 —