Crown Audio 280A specifications 180A, 1160APower, Features

180A

280A

1160A

The Crown® 180A, 280A, and 1160A are high-value amplifiers 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 amplifiers vary in their number of inputs, number of outputs, and power range:

•180A has 1 input and one 80W power amplifier for single-zone systems.

•280A has 2 inputs and dual 80W power ampli- fiers for two-zone systems.

•1160A has 1 input and one 160W power ampli- fier for single-zone systems.

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

BTBT

Features

• 1 or 2 inputs, 1 or 2 amplifier output chan-	breaker/fuse, and thermal protection; details
nels.	available online at www.crownaudio.com
• Ideal for commercial and industrial use	• Three-Year, No-Fault, Fully Transferable War-
• Balanced Phoenix-type line inputs; touch-	ranty completely protects your investment
	and guarantees its specifications
proofed screw-terminal speaker outputs

•Advanced protection system includes output current limiting, DC protection, circuit

Some applications include schools, hospitals, factories, restaurant/retail, houses of worship, fitness facilities, A/V boardrooms, prisons, and small offices. 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.

Specifications

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

180A	*1 kHz
	Power
Minimum guaranteed power	80W
into 4 ohms or 70V/100V output

*1 kHz Power: refers to maximum power in watts at 1 kHz with 0.5% THD.

280A	*1 kHz
	Power
Minimum guaranteed power
per channel into 4 ohms or	80W
70V/100V output

*1 kHz Power: refers to maximum power in watts at 1 kHz with 0.5% THD.

*1 kHz

1160APower

Minimum guaranteed power

into 4 ohms or 70V/100V output 160W

*1 kHz Power: refers to maximum power in watts at 1 kHz with 0.5% THD.

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.

Amplifier 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.