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Complete Performance Systems with Personal In-Line Rechargeable Self Powered Monitors and

Anti-Shock Microphone Mounts for Trumpets and Saxophones and all other Brass Instruments.

 

  WM61A 

 

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Displayed is the schematic of the Schoeps electret transformer circuit used for the Soundcatcher.

  With matched 2N5087 transistors.

  I have also added 22pf capacitors parallel to he 100K resistors, for maximum low noise performance.

 

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Recording Microphone Specification info

Specifications
Type Pressure gradient condenser microphone
Diaphragm 6 micron gold-sputtered
Capsule Size 0.87" (22 mm)
XLR Connector Gold Plated
Frequency Response 30Hz - 20KHz
Polar Pattern choice of Cardioid or Omnidirectional
Sensitivity 10mV/Pa
Output Impedance 200 ohms
Equivalent Noise 18 dB (A-weighted IEC 268-4)
S/N Ratio 80 dB (Ref. 1 Pa A-weighted)
Max SPL for .5% THD 134 dB
Power Requirements +48V phantom power (+/-4V)

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