Sound Skulptor forums
Build help and troubleshooting => MP566 Tube microphone preamplifier => Topic started by: JPK on February 04, 2021, 05:49:31 PM
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This is how you can check the output transformer by measuring the coils DC resistances
The POL switch must be in the center position.
7 8 9 10 11 12
o o o o o o
o o o o o o
6 5 4 3 2 1
pin1-pin3 : 106 ?
pin4-pin6 : 101 ?
pin9-pin11 : 102 ?