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.
- 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) |
Additional Hardware
- Price: $159.95
What's in the Box
- Power Cord
- 2 x Detachable Rack Ears
- 3 Year Limited Warranty
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