Crown Audio 28M - Rack-Mountable 8 x 2 Preamplifier/Mixer

Crown Audio 28M - Rack-Mountable 8 x 2 Preamplifier/Mixer

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Crown Audio 28M - Rack-Mountable 8 x 2 Preamplifier/Mixer

The 28M, part of the Commercial Audio Series from Crown Audio, is a rack-mountable preamplifier/mixer ideal for use in factories, schools, hospitals, restaurants, offices, and other venues. It features eight mic/line inputs with stereo RCA jacks and balanced phoenix-type connectors and two outputs with balanced phoenix-type connectors. Priority muting is included for paging.

Individual volume, bass, and treble controls are provided for each input. LED signal indicators are provided for each input and the output. A built-in tone generator provides bell, pre-announce chime, alert, and evacuate tones.

Crown Audio 28M - Rack-Mountable Preamplifier/Mixer Specifications:

  • Frequency Response (at line out): 20Hz to 20kHz+/-1dB
  • Signal to Noise Ratio (master volume at minimum): 100dB
  • THD: less than 0.01% at rated output at 1kHz
  • Input Sensitivity (volts RMS for full output at maximum gain)
  • Balanced mic inputs: 3mV
  • Balanced line inputs: 800mV
  • RCA connectors: 400mV
  • Input Impedance (nominal)
  • Mic: 400 ohms
  • Line: 100 kilohms
  • RCA: 50 kilohms
  • Crosstalk (all controls at "10"): -50dB at 1kHz
  • Line Output Level (nominal): 1V into 10 kilohms
  • Phantom Power: 15 VDC
  • Dimensions (W x H x D): 19" x 1.7" x 10.7"

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