G7 Mic build - 33meg resistor - is 22M or 47meg OK ?
- Thread starter PeteC
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useme2305
Well-known member
take the 22meg and add a 10meg in series if you have one?
shabtek
Well-known member
either one will work, try both--are you using the recommended capsule;
dmp
Well-known member
That 33meg resistor will often be higher. In the m49 it is 150meg and some designs it is up to 1G.
Basically, the pattern voltage comes in through the 10k and the 100n cap provides a little stabilization. Assume the pattern voltage is steady then the 33meg pins the back of capsule at that nominal voltage.
Basically, the pattern voltage comes in through the 10k and the 100n cap provides a little stabilization. Assume the pattern voltage is steady then the 33meg pins the back of capsule at that nominal voltage.
shabtek
Well-known member
and you are concerned with a $1 resistor...If it were mine I would follow the scheme--or empirically find what sounds best--lotsa monies for that capsule.
..anything between 10M and 100M will do fine
You shouldn't use larger than 100M - as it is just a back-membrane polarisation voltage supplier for the adjustable pattern. Too large a value will result in too slow pattern changes (it has to charge/discharge the 10nF polystyrene capacitor to ground)
Jakob E.
You shouldn't use larger than 100M - as it is just a back-membrane polarisation voltage supplier for the adjustable pattern. Too large a value will result in too slow pattern changes (it has to charge/discharge the 10nF polystyrene capacitor to ground)
Jakob E.
