Crown CCA 1160A, Catalog

COMMERCIAL AUDIO

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www.crownaudio.com

C

rown’s Commercial Audio mixer/amplifiers deliver legendary Crown quality to the commercial audio 
industry. These high-value mixer-amplifiers provide both 8-ohm and constant-voltage outputs (70V 

and 100V) for use in a wide range of commercial applications including schools, hospitals, factories, 
restaurant/retail, houses of worship, fitness facilities, A/V boardrooms, correctional facilities, and small 
offices. Easily configured for a range of uses such as paging, background music, security, and evacua-
tion instructions, Crown’s Commercial Audio units are the smart choice for commercial sound.

SPECIFICATIONS

Performance

Frequency Response (at 1 watt from line out): 

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.

THD + N:

 < 0.5% at rated power 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.

Input Impedance (nominal): 

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).

Line Output Level (nominal):

 1V into 10 

kilohms.

Phantom Power:

 15 VDC.

AC Line Voltages Available: 

Universal Power Supply. Line voltage tolerance 
+15%, –20%.

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.

Input Volume Controls: 

Four controls, one per 

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. 

Power Indicator:

 Blue LED indicates power on.

Input Signal Presence Indicators: 

Green LED, 

one above each channel's input attenuator, 
illuminates 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. 

Output Signal Presence Indicator:

 Green LED 

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:

 Detented 

potentiometer with knob.

Back Panel Controls, Connectors and 
Indicators

Fuse:

 Protects the power supply.

AC Power Inlet:

 Detachable IEC accepts US or 

Euro style power cords.

Amplifi er Output Connector:

 4-position termi-

nal barrier block with COM (Common), 8 ohms, 
70V and 100V terminals. Accepts up to 10 AWG 
terminal forks. Non-touch cover included.

Preamp Line Out Connector:

 3-pin balanced 

Phoenix-type for connection to external ampli-
fi ers. Level independent of master volume 
control.

Input Connector 1:

 5-terminal Phoenix connec-

tor. 3 terminals for balanced signal, 2 terminals 
for priority contact closure, which mutes other 
channels when DIP switch 3 is on.

Input Connector 2:

 Unbalanced line-level RCA-

type connectors.

Input Connector 3:

 Unbalanced line-level RCA-

type connectors.

Input Connector 4 (160MA only):

 Unbalanced 

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). 

MOH Level Control: 

Trim pot adjusts level for 

Music-On-Hold output from Telephone (MOH) 
Output Connector.

Amp Confi guration DIP Switch:

 DIP switch 

selection 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 sens-
ing 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.

VOX Threshold:

 Trim pot controls how loud 

the voice on CH1 must be before muting other 
channels. Can be set for no muting.

Cooling

Convection cooled.

Protection

Included protection mechanisms are current 
limiting, over-temperature thermal cutout, and 
DC-fault load protection. The unit is protected 
aginst turn-on/turn-off thumps.

Included Accessories 

Power cord
Non-touch cover for output connectors
Phoenix-type connectors
Spade lugs

Optional Accessories

Part no. IST 600-ohm Isolation Transformer for 
Telephone Output or Input 1.
Part no. RM1 single rack mount kit for mount-
ing a single MA unit in a rack.
Part no. RM2 double rack mount kit for mount-
ing two MA units side-by-side in a rack.
Part no. S-Cover 10-pack of security knobs

Dimensions

Width: Half rack width (9.5 in. or 24.1 cm).
Height (front panel): 3.5 in. (8.9 cm). 
Height (including feet): 4.1 in. (10.5 cm).
Depth (front panel to back panel): 12.2 in. (31.0 
cm).
Depth (front of knobs to back panel): 13.9 in. 
(35.2 cm).

Weight 

Net Weight:

135MA:

8 lb 2 oz (3.7 kg).

160MA: 9 lb 7 oz (4.3 kg).

Shipping Weight:

135MA: 10 lb 16 oz (4.9 kg).
160MA: 12 lb 4 oz (5.6 kg).

Regulatory Certifications

Note: All measurements are related to 120VAC units 60 
Hz in stereo mode with 8-ohm loads at 1 kHz at rated 
power unless otherwise specified. Specifications for 
units supplied outside the U.S.A. may vary slightly at 
different AC voltages and frequencies.