Crown 1160MA Specifications

180MA
280MA
1160MA
®
T he Cr own 180MA, 280MA and 1160MA are
high-value mixer-amplifi ers for commercial
and industrial audio. They provide 4-ohm
and constant-voltage outputs (70V and 100V).
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 mixer-amps vary in their number of inputs,
number of outputs, and power range:
• 180MA has 4 inputs and one 80W power ampli-
fi er for single-zone systems.
• 280MA has 8 inputs and dual 80W power ampli-
fi ers for two-zone systems.
• 1160MA has 4 inputs and one 160W power
amplifi er for single-zone systems.
Input routing allows each input to be assigned to
any output. This drastically reduces the need for
additional mixers or amplifi ers (or both) when
systems require either more inputs or outputs.
However, each mixer-amplifi er can be upgraded as
a facility expands. For example, you can add more
mixers for more inputs, or add more power amps
to handle more zones.
Other features include priority muting, phantom
power, and capability for remote volume control.
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):
Balanced mic inputs: 3 mV.
Balanced line inputs: 800 mV.
RCA connectors: 400 mV.
C O M M E R C I A L
Features
• 4 or 8 inputs, 1 or 2 amplifi er output channels
• Ideal for commercial and industrial use
• Balanced Phoenix-type mic/line inputs;
touch-proof screw-terminal speaker outputs
• Any input can be sent to any output
180MA
Minimum guaranteed power
into 4 ohms or 70V/100V output
*1 kHz Power: refers to maximum power in watts at
1 kHz with 0.5% THD.
280MA
Minimum guaranteed power
per channel into 4 ohms or
70V/100V output
*1 kHz Power: refers to maximum power in watts at
1 kHz with 0.5% THD.
1160MA
Minimum guaranteed power
into 4 ohms or 70V/100V output
*1 kHz Power: refers to maximum power in watts at
1 kHz with 0.5% THD.
A U D I O S E R I E S
• Priority muting
• Independent bass and treble controls for
each input
• Three-Year, No-Fault, Fully Transferable
Warranty completely protects your invest-
ment and guarantees its specifi cations
Input Impedance (nominal):
* 1 kHz
Mic: 400 ohms.
Power
Line: 100 kilohms.
RCA: 50 kilohms.
80W Crosstalk: –70dB at 1kHz.
Line Output Level (nominal): 1V into 10 kilohms.
Phantom Power: 15 VDC.
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/Humidy: 0° C to 40° C at
* 1 kHz
95% relative humidity (non-condensing).
Power
Storage Temperature: –20° C to 85° C.
Front Panel Controls and Indicators
80W
Power Switch: Pushbutton on-off switch. The
power switch does not affect the 24V DC auxiliary
power input.
Input Volume Controls: Microphone/line, four in
180MA and 1160MA, eight in 280MA. Detented
potentiometers with knobs.
Tone Controls: Bass and Treble non-detented
recessed potentiometers on each input channel.
* 1 kHz
Bass ±10 dB at 100 Hz, Treble ±10 dB at 10 kHz.
Power
Power Indicator: Blue LED indicates power on.
Input Signal Presence Indicator: Green LED, one
160W
for each input channel, illuminates when input
signal exceeds –24 dBu (line) or –70 dBu (mic).
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. Does not respond
to signals from the AMP INPUT connector.