10
– CXA120
CXA120 –
11
8. SPECIFICATIONS
Performance
Amplifier Power: 120 W, nominal, 180 W peak (10 mS)
Frequency Response: 50 Hz–15 kHz ±3 dB
Distortion: < 0.5% THD at 1 kHz nominal power
Noise: >75 dB
Equalization
Output:
EQ-HI: ±10 dB at 10 kHz
EQ-LO: ±10 dB at 100 Hz
Audio Inputs
Main Input Type: One balanced/unbalanced screw-terminal
connectors with switchable input level
Main Input Sensitivity: 1 V balanced/0.5 V unbalanced
Aux Input Sensitivity: 100 mV balanced/50 mV unbalanced
Main Input Impedance: 10 k
Ω
Aux Input Impedance: 20 k
Ω
Tel/Paging Input Type: One balanced/unbalanced screw-terminal
connector with adjustable input level
Tel/Paging Input Impedance: 300
Ω
Audio Outputs
Number of Channels: One
Low Impedance: 4
Ω
Constant Voltage: 25 V, 70 V, 100 V Screw-terminal
connectors (15
Ω
, 42
Ω
, 83
Ω
)
Controls
Front Panel: Power switch and LED, Master Volume, EQ-LO, EQ-HI
Rear Panel: Telephone Paging output volume level,
Input sensitivity switch, 24 VDC on/off switch,
AC Power
Power supply: 115/230 VAC (±5%), 50/60 Hz, 2.5 A fuse
24 VDC (battery), 15 A fuse
Power Consumption: 285 W
Environment
Maximum Ambient: 131° F (55° C) Non-precipitating humidity
Physical
Dimensions (HxWxD): 3.9 in/100 mm x 17.1 in/435 mm x 13.2 in/335 mm
Weight: 19.4 lb/8.8 kg
Warranty
5 years, parts and labor
Accessories
Rack-mount kit
DISCLAIMER
EAW Commercial continually engages in research related
to product improvement, new materials, and production
methods. Design refinements are introduced into existing
products without notice as a routine expression of that
philosophy. For this reason, any current EAW Commercial
product may differ in some respect from its published
description, but will always equal or exceed the original design
specifications unless otherwise stated.
“EAW Commercial” is a trademark of LOUD Technologies
Inc. All other brand names mentioned are trademarks or
registered trademarks of their respective holders, and are
hereby acknowledged.
VOICE PRIORITY ADJUSTMENT
The amplifier has an internal adjustment potentiometer (on
the front circuit board) that allows you to set the level at which
the voice priority circuit activates.
For example, suppose that only
loud
talking into a
telephone paging microphone will mute the main input's music
program. This potentiometer can adjust the voice priority
sensitivity until it takes only moderate or low volumes to mute
the music.
Please note that the following adjustment is for
qualified and experienced electronics technicians
only, carefully trained in all aspects of ESD (electro-static
discharge) precautions and electronics safety.
1. Make sure the unit is switched off, and that the power
supply cord and all other cords are removed.
2. Turn the unit upside down and place it on a soft flat
surface.
3. Look along the bottom edge of the front panel and you will
see a small access hole in the bottom panel. Inside the
hole you will see a small potentiometer, R45 on the front
panel circuit board.
4. Using an insulated small phillips screwdriver, gently rotate
this pot to change the sensitivity (clockwise for more
sensitivity, i.e., less intense signals will mute the input).
5. When finished, verify that the Telephone paging will
suitably mute the main input, without having to shout.
Bass
Treble
Vol
Power
Access
Hole
Feet
Feet
