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T
he Crown
®
180A, 280A, and 1160A are
high-value amplifi ers for commercial and
industrial audio. They provide 4-ohm and
constant-voltage outputs (70V and 100V). The
amps are part of Crown’s Commercial Audio
Series, which also includes mixers and mixer-
amps. These low-cost units provide all necessary
features in a simple building-block format.
The amplifi ers vary in their number of inputs,
number of outputs, and power range:
• 180A has 1 input and one 80W power amplifi er
for single-zone systems.
• 280A has 2 inputs and dual 80W power ampli-
fi ers for two-zone systems.
• 1160A has 1 input and one 160W power ampli-
fi er for single-zone systems.
Some applications include schools, hospitals,
factories, restaurant/retail, houses of worship,
fi tness facilities, A/V boardrooms, prisons, and
small offi ces. Typical uses are paging, background
music, security and evacuation instructions.
The sound system can be upgraded as a facility
expands. For example, you can add more mixers
for more inputs, or add more power amps (or
mixer-amps) to handle more zones.
Specifi cations
Performance
Frequency Reponse (at 1 watt from 4-ohm tap):
70 Hz to 19 kHz +/- 1 dB.
Frequency Response (at line out): 20 Hz to 20
kHz +/- 1 dB.
Power Bandwidth (at 4-ohm tap, 2 dB below
maxium 1 kHz power): 50 Hz to 20 kHz with
< 0.5% THD
Signal to Noise Ratio (ref. to rated power, master
volume at minimum): 85 dB.
DC Output Offset: < ±5 mV.
THD: Less than 0.5% at rated power at 1 kHz.
Input Sensitivity (for full output at maximum
gain): 800 mV.
Input Impedance (nominal): 100 kilohms.
Minimum Load Impedance:
100V output: 160 ohms.
70V output: 80 ohms.
4-ohm output: 4/8 ohms.
Crosstalk (all controls at “10”): –70 dB at 1kHz.
Line Output Level (nominal): 1V into 10 kilohms.
AC Line Voltages Available:
100V 50/60 Hz
120V 60 Hz
220V 50/60 Hz
230V 50/60 Hz
240V 50/60 Hz
Operating Temperature/Humidity: 0° C to 40° C
at 95% relative humidity (non-condensing).
Storage Temperature: –20° C to 85° C.
Front Panel Controls and Indicators
Power Switch: Pushbutton on-off switch. The
power switch does not affect the 24V DC auxiliary
power input.
Power Indicator: Blue LED indicates power on.
Output Signal Presence Indicator: Green LED,
one for each output channel, illuminates when
output signal level exceeds 100 mV (45 dB below
full power) from the 4-ohm tap.
Clip Indicators: Red LED, one per output channel.
Illuminates at threshold of audible distortion.
Master Volume Controls: One per output channel.
Detented potentiometer with knob.
Tone Controls: Bass and Treble non-detented
potentiometers on each channel. Bass ±10 dB at
100 Hz, Treble ±10 dB at 10 kHz.
Back Panel Controls and Connectors
Reset Switch: Resets the circuit breaker that
protects the power supply. 220/230/240V units
have a fuse instead.
AC Power Inlet: Detachable IEC.
Auxiliary Power Input: 2-position terminal strip
for 24 VDC (±10%) backup power. Accepts up to
14 AWG terminal forks.
Amplifi er Outputs Connectors: One per channel,
4-position terminal strip with COM (Common), 4
ohms, 70V and 100V terminals. Accepts up to 10
AWG terminal forks. Non-touch cover included.
Output VCA Connector: One for every two chan-
nels, 4-pin Phoenix-type connector for two VCA
control lines of +10 VDC and ground. Compatible
with Crown 1-VCAP and 4-VCAP modules.
COMMERCIAL AUDIO SERIES
• 1 or 2 inputs, 1 or 2 amplifi er output chan-
nels.
• Ideal for commercial and industrial use
• Balanced Phoenix-type line inputs; touch-
proofed screw-terminal speaker outputs
• Advanced protection system includes output
current limiting, DC protection, circuit
breaker/fuse, and thermal protection; details
available online at www.crownaudio.com
• Three-Year, No-Fault, Fully Transferable War-
ranty completely protects your investment
and guarantees its specifi cations
Features
1 kHz
Power
80W
Minimum guaranteed power
into 4 ohms or 70V/100V output
180A
*1 kHz Power: refers to maximum power in watts at
1 kHz with 0.5% THD.
*
1 kHz
Power
80W
Minimum guaranteed power
per channel into 4 ohms or
70V/100V output
280A
*1 kHz Power: refers to maximum power in watts at
1 kHz with 0.5% THD.
*
1 kHz
Power
160W
Minimum guaranteed power
into 4 ohms or 70V/100V output
1160A
*1 kHz Power: refers to maximum power in watts at
1 kHz with 0.5% THD.
*
180A
280A
1160A
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