Microphone Box
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Microphone Box

£156.24  exc. VAT    
(£187.49 Inc. VAT)

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  • Dual channel amplifier
  • Use with long or short microphone probes
  • Suitable for use with microsecond counters
  • Three operating modes
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Microphone Box

The Microphone Box is an all-purpose dual-channel amplifier for long or short microphone probes. The Microphone Box is particularly suitable for use with Microsecond Counters in experiments for determining speed of sound. Both channels can be individually switched between the operating modes:

  • Signal for connecting an oscilloscope
  • Level for connecting a voltmeters
  • Pulse for connecting a microsecond counter.

The trigger threshold for the pulse depends on the gain of the pre-amp, which is adjustable.

Please note the Microphone Box includes a 12V AC plug-in power supply.


  • Band width: 10 Hz to 42kHz
  • Gain: 20x to 70x
  • Output impedance: 1kΩ
  • Output signal: Switchable between Signal, Level and
  • Pulse
  • Signal: 0 – 14 Vpp
  • Level: 0 – 7V DC
  • Pulse: Low: 0V, high: 8V DC, length: 150ms
  • Inputs: 3.5mm jack plugs
  • Outputs: BNC socket
  • Power supply: Via 12V AC, 500mA plug-in power supply
  • Dimensions: 100 x 75 x 35mm
  • Weight, including power supply: 450g approximately

Required Equipment


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