EAW POWER AMPLIFIER CXA120 Instruction Manual download pdf (Page 3)

2 – CXA120

CXA120 – 3

2. INTRODUCTION

The CXA120 is designed for continuous duty in speech,

music, paging and sound reinforcement applications in

churches, schools, ofces, arenas, hotel meeting rooms,

convention centers, recreation facilities and other venues

demanding high performance, exible features, and rugged

dependability.

The CXA120 offers two discrete inputs with priority. The

main program input is actively balanced and terminated to

screw-terminal connections on the rear panel. The second

input is a telephone/paging input, which is also actively

balanced and terminated to a screw-terminal connection on

the rear panel. The telephone/paging input has voice-activated

priority over the main program input, and has an adjustable

rear panel volume control.

The main input features a 0/–20 dB sensitivity switch for

low-level and high-level input signals.

Output modes include 4Ω constant impedance, and

25 V, 70 V, and 100 V constant voltage. The smart output

stage is fully protected against permanent damage caused by

overloading, shorts, and extreme temperatures. The CXA120

operates on either 115 or 230 VAC, 50/60Hz, determined by

a voltage select switch, and supplied by a detachable IEC

power cord. A rear panel terminal strip connection is provided

for connecting an external 24 VDC backup battery, with a rear

panel DC power switch.

The front panel provides a master volume control, and

controls for Bass and Treble. The Bass and Treble controls

provide shelving equalization, with up to 10 dB of boost or cut

at 100 Hz and 10 kHz.

A front panel meter indicates output signal strength,

ranging from –20 dB to +6 dB.

KEY FEATURES

• One balanced/unbalanced Main Input

• One balanced/unbalanced Telephone Paging Input with

Volume Trim Control and Voice-Activated Priority

• 120 watt rms, convection cooled

• 4 Ω – 25 V – 70 V – 100 V Outputs

• Discrete component power amplier

• Switchable 24 VDC Backup Power Input

• 2 RU Rack-Mounting Kit Included

APPLICATIONS

• Foreground/Background Music Systems

• Sound Reinforcement Systems

• Paging Systems

• Continuous-duty Applications

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EAW POWER AMPLIFIER CXA120 Instruction Manual Page 3

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