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

B&H # CR28M Mfr # 28M
You Pay: $459.00

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.

Eight input channels, each with stereo RCA jacks and balanced phoenix-type connectors
Two output channels with balanced phoenix-type connectors
Each input may be assigned to any combination of outputs
Priority muting for paging
Built-in four tone generator
Signal indicator LEDs
Level, bass, and treble controls for each input
Phantom power
Frequency Response 20Hz - 20kHz
Signal to Noise Ratio 100 dB
Total Harmonic Distortion (THD) 0.05% (Typical)
Input Sensitivity Balanced Mic: 3mV
Balanced Line: 800mV
RCA: 400mV
Input Impedance Mic: 400 ohms
Line: 100 k ohms
RCA: 50 k ohms
Crosstalk -50 dB
Output Level 1.2V
Phantom Power 15VDC
Controls Front Panel 1 x Power Switch
8 x Input Volume Control Knobs
8 x Bass Controls
8 x Treble Controls
2 x Output Volume Control Knobs
Controls Rear Panel 1 x Mixer Config. DIP Switch (For Priority Muting and Phantom Power)
8 x Mic/Line Selector Switches
2 x Output Tone Control Potentiometers
16 x Input Routing Dipswitches
Indicators Green LEDs for Input and Output Signals on Front Panel
Red Clip Indicator LED
Blue Power Indicator LED
Connectors 1 x AC Power Inlet
1 x 2-Position Terminal Strip (24VDC Backup Power)
1 x 3-Pin Phoenix Connector for Priority Muting
2 x 3-Pin Balanced Phoenix Output Connectors
1 x 5-Pin Phoenix Connector for Tone Generator
8 x Balanced 3-Pin Phoenix Input Connectors
8 x RCA Stereo Input Pairs (16 Jacks Total)
Dimensions (WxHxD) 19 x 1.75 x 10.7" (483 x 45 x 272mm)
Weight 8.7 lbs (3.9 kg)
Crown Audio 28M - Rack-Mountable 8 x 2 Preamplifier/Mixer
  • Power Cord
  • 2 x Detachable Rack Ears
  • 3 Year Limited Warranty
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