EAW CXA160 / CXA80 instruction manual Introduction, Features, Applications

2. INTRODUCTION

The CXA160 and CXA80 amplifiers are designed for continuous duty in speech, music, paging and sound reinforcement applications in churches, schools, offices, arenas, hotel meeting rooms, convention centers, recreation facilities and other venues demanding high performance, flexible features and rugged dependability.

The CXA160 has a 160 watt power amplifier, and the CXA80 has 80 watts. Apart from this difference in power output, the two models are identical in details and operation.

The main line-level input is actively balanced, with a sensitivity control and selection switches for enabling the parallel output, a 10 dB pad, and high-pass filtering. The input and priority input have XLR, TRS, screw-terminal and Phoenix euroblock connectors.

The priority input is actively balanced, with a sensitivity control and selection switches for line-level input, mic-level input, mic-level input with 24 VDC phantom power, 10 dB pad, and high-pass filtering.

When an audio signal greater than -20 dB is present at the priority input, or when an external priority switch is pressed, the main input is automatically muted, and the priority input will play.

A parallel output allows the line-level input signal to be daisy-chained to feed other amplifiers or parts of your system.

Output modes include 4 ohm constant impedance, and constant voltage 25 V, 70 V and 100 V. The smart output stage is fully protected against permanent damage caused by overloading, shorts, and extreme temperatures.

The universal power supply will operate from 100 VAC to

240 VAC, 50/60Hz, supplied by a detachable IEC power cord.

Rear panel terminals are provided for connecting an external 24 VDC backup battery, with automatic switching if the AC mains fails.

The front panel provides power on/off, a master volume control, and bass and treble controls. Status LEDs indicate signal present, signal overload, fault and power on.

FEATURES

•Line input with combination XLR/TRS connector, euro connector, and screw terminals

•Priority mic/line input with combination XLR/TRS connector, euro connector, and screw terminals

•Parallel output (switch defeatable) for daisy-chaining input signal to other amplifiers or parts of your system (XLR, TRS, euro connector, and screw terminals)

•Input is switch-configurable for parallel output on/off, high pass filter on/off, and 10 dB pad in/out

•Priority input is switch-configurable for mic or line, phantom power on/off, high pass filter on/off, and 10 dB pad in/out

•Priority terminals for manual ducking of main input, as well as automatic ducking when priority signal present

•Trim control and level-setting LED on input and priority input

•Front panel EQ adjustment of bass and treble

•Front panel master level control

•Front panel overload, signal, fault and power-on LEDs

•Front panel power switch

•External volume control (with user-supplied 10k pot)

•External fault relay terminals

•CXA160: 160 watt rms, convection cooled

•CXA80: 80 watt rms, convection cooled

•4 ohm - 25 V - 70 V - 100 V screw terminal outputs

•Global high-pass filter

•Universal power supply, 100 VAC–240 VAC, 50–60 Hz

•Automatic switching to 24 VDC backup power input

•2 RU rack-mountable

APPLICATIONS

•Foreground/background music systems

•Paging systems

•Continuous-duty applications

•Sound reinforcement systems

CXA160 / CXA80 –