QSC Audio CMX 300V, CMX 800V, CMX 500V user manual Operating Voltage, Operation

Page 16

Operating Voltage

(AC Mains)

Make sure you connect the amplifier to the correct AC line voltage, as shown on the serial number label. Connecting to the wrong line voltage is dangerous and may damage the amplifier (Figure 31).

– Figure 31 –

Operation

AC Power Switch

Before applying power, check all connections and turn the attenuation controls fully counter clockwise to maximum attenuation. One second of muting is normal when the amp is turned on or off (Figure 32).

Attenuation Controls

The controls are marked with a scale indicating attenuation. Maximum attenuation is fully counter clockwise, minimum attenuation is fully clockwise. (Figure 33).

LED Indicators

The green SIGNAL LED indicators light at approximately 0.1% of full power. The red CLIP LED indicator flashes during overload (clipping).

If the amplifier's protection circuitry triggers protective muting, the signal and clip LEDs will not light. If this occurs during use, see the Troubleshooting section on pages 16 — 17.

On

 

– Figure 32 –

– Figure 33 –

Model Maximum Voltage Gain

CMX 300V

31.6 x (30 dB)

 

 

CMX 500V

40 x (32 dB)

 

 

CMX 800V

46 x (33 dB)

 

 

– Table 4 –

15

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Contents CMX Series CMXImportant Safety Precautions and Explanation of Symbols QSC Audio Products 6-Year Limited Warranty DisclaimerIntroduction FeaturesFront Panel Back Panel Features and setupClip Limiter Input Filter Parallel Input Mode Bridge Mono Mode What it isDifference Between Modes Bridge Mono Mode Set Channel 2 dip switches, 8 and 10, to offDistributed Constant Voltage Outputs VoltInstallation Connections InputsSpeakon Outputs Terminal Block Connector Operating Voltage OperationTroubleshooting Fan coolingProblem Squeals and feedback Problem Distorted Sound Indication Clip LED flashingIndication Clip LED flashing Specifications Mailing Address Telephone NumbersFacsimile Numbers World Wide Web Mail