Crown 1160MA User manual

T
he Crown®180MA, 280MA and 1160MA are
high-value mixer-amplifiers 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,
fitness facilities, A/V boardrooms, prisons, and
small offices. 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-
fier for single-zone systems.
• 280MA has 8 inputs and dual 80W power ampli-
fiers for two-zone systems.
• 1160MA has 4 inputs and one 160W power
amplifier for single-zone systems.
Input routing allows each input to be assigned to
any output. This drastically reduces the need for
additional mixers or amplifiers (or both) when
systems require either more inputs or outputs.
However, each mixer-amplifier 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.
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):
Balanced mic inputs: 3 mV.
Balanced line inputs: 800 mV.
RCA connectors: 400 mV.
Input Impedance (nominal):
Mic: 400 ohms.
Line: 100 kilohms.
RCA: 50 kilohms.
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
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.
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.
Bass ±10 dB at 100 Hz, Treble ±10 dB at 10 kHz.
Power Indicator: Blue LED indicates power on.
Input Signal Presence Indicator: Green LED, one
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.
COMMERCIAL AUDIO SERIES
• 4 or 8 inputs, 1 or 2 amplifier 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
• 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 specifications
Features
1 kHz
Power
80W
Minimum guaranteed power
into 4 ohms or 70V/100V output
180MA
*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
280MA
*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
1160MA
*1 kHz Power: refers to maximum power in watts at
1 kHz with 0.5% THD.
*
180MA
280MA
1160MA

Crown International
1718 W. Mishawaka Rd.
Elkhart, IN 46517-9439
TEL: [phone]
FAX: [phone]FAX
www.crownaudio.com
12/07 137964-2B
Specifications subject to change without prior notice. Latest
information available at www.crownaudio.com.
Crown and Crown Audio are registered trademarks of Crown
International. Other trademarks are the property of their
respective owners. Printed in U.S.A.
© 2007 Crown Audio®, Inc.
Clip Indicators: Red LED, one per output chan-
nel. Illuminates at threshold of audible distortion.
Does not respond to signals from the AMP INPUT
connector.
Output Volume Controls: One per output channel.
Detented potentiometer with knob.
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 14
AWG terminal forks. Non-touch cover included.
Output VCA Connector: 4-pin Phoenix-type
connector for two VCA control lines of +10 VDC
and ground. Compatible with Crown 1-VCAP and
4-VCAP modules.
Amp Config Switch: A DIP switch with two func-
tions:
1. Assigns an input as the priority input for each
output, thereby temporarily muting the remaining
inputs. Muting is activated by contact closure.
2. Global enable switch for phantom power. Does
not affect RCA inputs. Default position is off.
Priority Connector: 3-pin Phoenix-type connector
allows Input 1 or Input 5 (280MA only) to mute
other input signals by contact closure.
Input Routing Switch (280MA only): DIP switches
that assign each input signal to each output. Two
switches per input.
Line Out Connector: One 3-pin balanced Phoenix-
type connector per output channel. Post master,
pre-VCA. Level controlled by master volume
control.
The tone generator has been omitted. Call Crown Tech
Support if you have a tone generator question.
Input Connectors:
Mic/Line Connector: 3-pin Phoenix-type, bal-
anced, one per input channel.
Dual RCA Input Connector: For stereo music
signals, unbalanced, summed together, two con-
nectors per input channel.
Amp Input Connector: 3-pin Phoenix-type, high-
impedance balanced, one per amplifer channel.
Used to link an additional mixer to the mixer-
amplifier. Can be used to connect an external
processor.
Mic/line Switch: Selects mic-level or line-level
signals. One switch for each balanced input.
Link In/Out Switch: Slide switch, one per channel.
With the Link Switch IN, any signal applied to the
Amp Input connector will be mixed with the input
signal(s). With the Link Switch OUT, only the
signal from the Amp Input Connector will appear
at the amplifier output.
Cooling
Convection cooled.
Protection
Current Limit Protection: Included.
Thermal Limit Protection: Over-temperature
thermal cutout.
DC-Fault Load Protection: Included.
Included Accessories
Power cord
Detachable rack ears
Screws for rack ears
Non-touch cover for output connectors
Phoenix-type connectors
Spade lugs
Optional Accessories
1-VCAP remote volume control for one channel.
4-VCAP remote volume control for four channels.
Dimensions
EIA Standard 19-inch (48.3-cm) rack mount width
(EIA RS-310-B) with rack ears, 3.5-inch (8.9-cm)
height and 12.2-inch (31.0-cm) depth behind the
mounting surface (not including non-touch cover).
4.1 inches (10.5 cm) high including feet. 13.9
inches (35.2 cm) deep from front of knobs to back
of non-touch cover.
Weight
Net Weight:
180MA: 21.0 lbs. (9.5 kg).
280MA: 25.3 lbs. (11.5 kg)
1160MA: 25.3 lbs. (11.5 kg)
Shipping Weight:
180MA: 26.0 lbs. (11.8 kg)
280MA: 30.3 lbs. (13.8 kg)
1160MA: 30.3 lbs. (13.8 kg)
280MA back panel shown
180MA
280MA
1160MA
Crown’s Three-Year, No-Fault, Fully Transferable Warranty
Crown offers a Three-Year, No-Fault, Fully Transferable Warranty for every new Crown mixer-amplifier—
an unsurpassed industry standard. With this unprecedented No-Fault protection, your new Crown mixer-
amplifier is warranted to meet or exceed original specifications for the first three years of ownership.
During this time, if your mixer-amplifier fails, or does not perform to original specifications, it will be
repaired or replaced at our expense. About the only things not covered by this warranty are those losses
normally covered by insurance and those caused by intentional abuse. And the coverage is transferable,
should you sell your mixer-amplifier.
See your authorized Crown dealer for full warranty disclosure and details. For customers outside of the
USA, please contact your authorized Crown distributor for warranty information or call 574-294-8200.
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