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J-mar Custom broadcast Audio voltage meter and comparator, US $153 – Picture 0
J-mar Custom broadcast Audio voltage meter and comparator, US $153 – Picture 0

J-mar Custom Broadcast Audio Voltage Meter And Comparator

US $153

  • Carleton Place, ON, Canada
  • Jun 7th
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Unique custom made audio voltmeter using a Ballantine mdl 300 vacuum tube voltmeter on left side of instrument and custom ckt on right side. It is used to compare the input to output audio signal level. 2 MHz impedance from 10hz to 700khz Voltage from 300uv to 300vac Balanced and unbalanced input. 2 input section with attached XLR connectors. relative and absolute measurement with 0,20,40 db attenuation Measures ac volt and decibels.

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