Crest Audio® UMA™ 4300 Mixer Amplifier

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Item No: 03616040
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Product Description

Crest Audio® UMA™ 4300 Mixer Amplifier

The Crest Audio® UMA™ 4300 mixer amplifier provides installers and contractors a simple and efficient solution for a broad range of sound reinforcement, paging and background music applications in retail spaces, restaurants, lounges and waiting rooms.

The UMA 4300 combines a four-input mixer with a highly efficient Class D 300 Watt mono amplifier. Each of the four inputs can handle a variety of input signals, including microphone, balanced line level and mono or stereo unbalanced line sources. The UMA 4300 provides a simple paging solution with priority mute level sensing controls on input 1. Inputs 1 and 2 are electronically balanced and provide mic pre-amp gain controls and switched 48V phantom power for microphones. Inputs 3 and 4 support balanced and unbalanced line inputs with switch selectable Euro-style connectors or dual RCA inputs.

The UMA 4300 can drive directly a low impedance loudspeaker with its 4 Ohm direct output or 25V, 70V or 100V constant voltage loudspeaker circuit.

The UMA 4300 is housed in a 2U rack mount chassis and has a voltage selector switch for 120V or 240VAC operation.

  • 300 Watt Class D power amplifier
  • SPS speaker protection system
  • High-pass filter to protect speaker transformers from low frequency overload
  • 2U rack-mount chassis
  • Four input level controls with signal/clip/mute LEDs
  • Power, signal and SPS indication LEDs
  • Master volume
  • Four electronically balanced Mic/Line inputs
  • Inputs 1 and 2 are electronically balanced with Euro connectors and preamp gain control
  • Inputs 1 and 2 have phantom power with switch
  • Inputs 3 and 4 have switch to select balanced Euro connector or dual RCA connectors
  • Inputs 3 and 4 have rear panel preamp gain controls
  • Input 1 Level sensing muting of inputs 2-4 with threshold/defeat control
  • Balanced output with level control
  • Switchable Mix output or input 4 Direct output
  • Output is not affected by mute or channel level if channel 4 is selected
  • Preamp output, power amp input for inserting processing with Bypass switch
  • 4, 25V, 70V and 100V outputs
  • Bass and Treble controls
  • Power switch
  • Line voltage switch for 120V or 240VAC operation

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