Crown Audio 160MA Folheto
T
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own
®
135MA and 160MA are high-
value mixer-amplifi ers for commercial audio.
They provide 8-ohm and constant-voltage
They provide 8-ohm and constant-voltage
outputs (70V and 100V). Typical uses are paging,
background music, and music-on-hold.
background music, and music-on-hold.
The 135MA provides 3 inputs (each with a volume
control) and a 35W amplifi er output. The 160MA
provides 4 inputs (each with a volume control)
and a 60W amplifi er output.
control) and a 35W amplifi er output. The 160MA
provides 4 inputs (each with a volume control)
and a 60W amplifi er output.
Other features include priority muting, voice-
activated muting, phantom power, and Bass and
Treble controls.
activated muting, phantom power, and Bass and
Treble controls.
Specifi cations
Performance
Frequency Response (at 1 watt from line out):
50 Hz to 20 kHz ± 1 dB.
19 Hz to 34 kHz +0, –3 dB.
50 Hz to 20 kHz ± 1 dB.
19 Hz to 34 kHz +0, –3 dB.
Signal to Noise Ratio (ref. to rated power,
master volume at minimum):
Mic: > 58 dB.
Line: > 60 dB.
Telephone: > 60 dB.
Inputs 2 or 3 (and 4 in 160MA): > 78 dB.
master volume at minimum):
Mic: > 58 dB.
Line: > 60 dB.
Telephone: > 60 dB.
Inputs 2 or 3 (and 4 in 160MA): > 78 dB.
THD + N: < 0.5% at rated power at 1 kHz.
< 0.1% at 5W at 1 kHz.
< 0.1% at 5W at 1 kHz.
Input Sensitivity (for full output at maximum
gain):
Input 1: Mic 3mV, Line 800mV.
Input 2: 400mV.
Input 3: 400mV.
Input 4 (160MA only): 400mV.
gain):
Input 1: Mic 3mV, Line 800mV.
Input 2: 400mV.
Input 3: 400mV.
Input 4 (160MA only): 400mV.
Input Impedance (nominal):
Mic: 2.2 kilohms.
Line: 10 kilohms.
RCA: 10 kilohms.
Mic: 2.2 kilohms.
Line: 10 kilohms.
RCA: 10 kilohms.
Crosstalk: –82 dB at 1kHz (Ch. 1 line input 0.8V,
Ch. 1 volume at minimum, other channel volumes
at maximum).
Ch. 1 volume at minimum, other channel volumes
at maximum).
Line Output Level (nominal): 1V into 10 kilohms.
Phantom Power: 15 VDC.
AC Line Voltages Available:
Universal Power Supply. Line voltage tolerance
+15%, –20%.
Universal Power Supply. Line voltage tolerance
+15%, –20%.
Operating Temperature/Humidity: 0° C to 40° C
at 95% relative humidity (non-condensing).
at 95% relative humidity (non-condensing).
Storage Temperature: –20° C to 85° C.
Front Panel Controls and Indicators
Power Switch: Pushbutton on-off switch.
Input Volume Controls: Four controls, one per
input. Detented potentiometers with knobs.
input. Detented potentiometers with knobs.
Tone Controls: Bass and Treble non-detented
recessed potentiometers under master output
volume control. Bass ±10 dB at 100 Hz, Treble
±10 dB at 10 kHz.
recessed potentiometers under master output
volume control. Bass ±10 dB at 100 Hz, Treble
±10 dB at 10 kHz.
Power Indicator: Blue LED indicates power on.
Input Signal Presence Indicators: Green LED,
one above each channel's input attenuator, illumi-
nates when input signal exceeds –40 dBu.
one above each channel's input attenuator, illumi-
nates when input signal exceeds –40 dBu.
Input Signal Clip Indicators: Green LED, one
above each channel's input attenuator, fl ashes
brightly at threshold of audible distortion.
above each channel's input attenuator, fl ashes
brightly at threshold of audible distortion.
Output Signal Presence Indicator: Green LED
above master output volume control illuminates
when any input signal exceeds –40 dBu.
above master output volume control illuminates
when any input signal exceeds –40 dBu.
Output Signal Clip Indicators: Red LED above
master output volume control fl ashes brightly at
threshold of audible distortion.
master output volume control fl ashes brightly at
threshold of audible distortion.
Master Output Volume Control: Detented potenti-
ometer with knob.
ometer with knob.
Back Panel Controls, Connectors and
Indicators
Indicators
AC Power Inlet: Detachable IEC accepts US or
Euro style power cords.
Euro style power cords.
Amplifi er Output Connector: 4-position terminal
barrier block with COM (Common), 8 ohms, 70V
and 100V terminals. Accepts up to 10 AWG termi-
nal forks. Non-touch cover included.
barrier block with COM (Common), 8 ohms, 70V
and 100V terminals. Accepts up to 10 AWG termi-
nal forks. Non-touch cover included.
Preamp Line Out Connector: 3-pin balanced
Phoenix-type for connection to external amplifi -
ers. Level independent of master volume control.
Phoenix-type for connection to external amplifi -
ers. Level independent of master volume control.
Input Connector 1: 5-terminal Phoenix connector.
3 terminals for balanced signal, 2 terminals for
priority contact closure, which mutes other chan-
nels when DIP switch 3 is on.
3 terminals for balanced signal, 2 terminals for
priority contact closure, which mutes other chan-
nels when DIP switch 3 is on.
Input Connector 2: Unbalanced line-level RCA-
type connectors.
type connectors.
Input Connector 3: Unbalanced line-level RCA-
type connectors.
type connectors.
Input Connector 4 (160MA only): Unbalanced
line-level RCA-type connectors.
line-level RCA-type connectors.
Telephone (MOH) Output Connector: 4-terminal
Phoenix connector (2 terminals for 1W output to
8-ohm speaker, 2 terminals for 600-ohm output to
PBX music-on-hold port).
Phoenix connector (2 terminals for 1W output to
8-ohm speaker, 2 terminals for 600-ohm output to
PBX music-on-hold port).
MOH Level Control: Trim pot adjusts level for
Music-On-Hold output from Telephone (MOH)
Output Connector.
Music-On-Hold output from Telephone (MOH)
Output Connector.
Amp Confi guration DIP Switch: DIP switch selec-
tion for multiple functions.
tion for multiple functions.
1. On: Sets CH1 to Mic Input. Off: Sets CH1 to
Line Input.
2. On: Sets CH1 to Normal mode (no priority).
3. On: CH1 priority contact closure mutes other
channels.
4. On: CH1 VOX mutes other channels by sensing
signal through Input 1.
5. On: Routes CH1 to MOH output.
6. On: Routes CH2 to MOH output.
7. On: Routes CH3 to MOH output.
8. On: 15V phantom power.
Line Input.
2. On: Sets CH1 to Normal mode (no priority).
3. On: CH1 priority contact closure mutes other
channels.
4. On: CH1 VOX mutes other channels by sensing
signal through Input 1.
5. On: Routes CH1 to MOH output.
6. On: Routes CH2 to MOH output.
7. On: Routes CH3 to MOH output.
8. On: 15V phantom power.
C O M M E R C I A L A U D I O S E R I E S
• 3 inputs (each with a volume control), and one
35W amplifi er output channel in 135MA
• 4 inputs (each with a volume control), and one
60W amplifi er output channel in 160MA
• Ideal for paging, background music, and
music-on-hold
• Balanced Phoenix-type mic/line input,
telephone output, dual RCA stereo music
inputs, screw-terminal speaker outputs
inputs, screw-terminal speaker outputs
• Priority muting by VOX or external switch
• Bass and Treble controls on master output
• Three-Year, No-Fault, Fully Transferable
Warranty completely protects your invest-
ment and guarantees its specifi cations
ment and guarantees its specifi cations
Features
135MA
160MA
1 kHz
Power
Power
35W
Minimum guaranteed power
into 8 ohms or 70V/100V output
into 8 ohms or 70V/100V output
135MA
*1 kHz Power: refers to maximum power in watts at
1 kHz with 0.5% THD.
1 kHz with 0.5% THD.
*
1 kHz
Power
Power
60W
Minimum guaranteed power
into 8 ohms or 70V/100V output
into 8 ohms or 70V/100V output
160MA
*1 kHz Power: refers to maximum power in watts at
1 kHz with 0.5% THD.
1 kHz with 0.5% THD.
*