Crown 180A - Manual

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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.

C O M M E R C I A L A U D I O S E R I E S

• 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

c u r r e n t l i m i t i n g , D C p r o t e c t i o n , c i r c u i t

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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