Unpacking; Rack Mounting; Cooling; Setting Clip Limiters - QSC RMX 850a User Manual

Unpacking

1. RMX amplifier
2. Quick Start Guide
3. Adhesive rubber feet (for non-rack mount applications)

Rack Mounting

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. Use the rear rack ear support kit to support the rear of the amplifier for portable use.
When installing equipment into a rack, distribute the units evenly. Otherwise, hazardous conditions may be created by an uneven weight distribution.

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.
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.
EN
CAUTIONG!: Do not block the front or rear air vents!
AC Mains
Connect AC power to the IEC socket on the back of the amplifier. NOTE: Turn off the AC power switch before connecting AC power.
ARNINNG!: 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.

Setting The Mode Switches

The RMX 4050a and RMX5050a have Mode switches for Stereo, Parallel, or Bridge Mode. Additionally, each channel has independent Clip Limiting
and Low Frequency (LF) Filtering.

Setting Clip Limiters

Each channel has a Clip Limiter with its own on-off switch. The limiter only responds to actual clipping, and automatically
compensates for load and voltage variations. Clip limiting is generally recommended, especially to protect high
frequency drivers.
• Set switch to the right to use Clip Limiting.
• Switch 1 controls Channel 1.
• Switch 10 controls Channel 2.
4. Rear rack ear mounting kit
5. IEC-type detachable power cord
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— Figure 4 —