CROWN 135MA

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The Model 135MA Mixer/Amplifier by Crown

The Crown® 135MA is a high value mixer-amplifier for commercial audio. It provides 8-ohm and constant-voltage outputs (70V and 100V). Typical uses are paging, background music, and music-on-hold. The 135MA provides 3 inputs (each with a volume control) and a 35W amplifier output. Other features include priority muting, voice activated muting, phantom power, and Bass and Treble controls.

135MA SPECIFICATIONS

• Minimum Guaranteed Power into 8 ohms or 70V/100V Output: 35W
• Frequency Response (at 1 watt from line out): 50Hz to 20kHz +/-1dB; 19Hz to 34kHz +0, -3dB
• 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 1kHz; <0.1% at 5W at 1kHz
• Input Sensitivity (for full output at maximum gain):

Input 1: Mic 3mV, Line 800mV. 

Input 2: 400mV. 

Input 3: 400mV.

• Input Impedance (nominal):

Mic: 2.2 kilohms. 

Line: 10 kilohms. 

RCA: 10 kilohms. 

• Crosstalk: -82dB 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: Storage Temperature: –20° C to 85° C.
• Cooling: Convection cooled.
• Protection: Included protection mechanisms are current limiting, over-temperature thermal cutout, and DC-fault load protection. The unit is protected against turn-on/turn-off thumps.

Included Accessories: 

• Power cord
• Non-touch cover for output connectors
• Phoenix-type connectors