EN
4
Rack Mounting
Optional handles shown. Use four screws and washers to 
mount the amplifier to the equipment rack rails. To use the 
amplifier outside a rack, attach the self-adhesive 
rubber feet to the bottom.
Cooling
Air flows from the rack, into the back of the amplifier, 
and out the front. This keeps the rack cool. The fan 
automatically runs faster when the amp is 
working hard.
Do not block the front or rear air vents!
AC Mains Connection
Connect AC power to the IEC socket on the back of the amplifier. NOTE: Turn off the AC power switch before connecting AC power. 
The AC Switch must be turned on to use remote control systems or the Standby function.
The correct AC line voltage is shown on the serial number label, on the rear panel. Connecting to the wrong line voltage may damage 
the amplifier or increase the risk of electric shock.
Air flow in QSC amplifiers: Cool air is drawn into 
the rear of the amplifier by the cooling fan. Warm 
air exits the front of the amplifier.
1- CH1 Terminal Block Input Connectors
2- DataPort Connector 
3- CH2 Terminal Block Input Connectors
4- Mode Switches
5- Barrier Strip Output Connectors
6- Cooling Air Inlet Vents
7- Mode Switch Setting Diagrams 
8- IEC Power Connector
Rear Panel
(CX404 shown, other models similar, 2-Ch. models equipped with XLR inputs as well)