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Shotgun mic T power supply circuit

Subject: Shotgun mic T power supply circuit
From: madl74
Date: Mon Dec 15, 2014 3:43 am ((PST))
  Fully balanced mic power circuit for MKH T type mics
    using two PP3 batts in series
  Bass cutoff -3dB point 14 Hz approx with actual preamp imp of 1 KOhm

       PP3 batts +18v --- 470 Ohm ----\=09=09
                          low noise    \
     mic 2 pos phase ---------------------- + 47 =C2=B5F - ---------Preamp =
  X                                           tant        \              X
  L                                                    1.0 KOhm          L
  R                                                       /              R
     mic 3 neg antiphase ------------------ - 47 =C2=B5F + ---------Preamp =
                                         /    tant
       PP3 batts -18v --- 470 Ohm ----/                                  O
  I                       low noise                                      U
  N                                                                      T
     mic 1 Gnd -------------------SCREEN-----------------------Preamp 1

David Brinicombe

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