Interesting thing going on with the screen grids in the power section. Screens are wired in series, with 100R resistor between the two:
What's that about?
Peavey Artist 240
Moderators: pompeiisneaks, Colossal
Peavey Artist 240
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I build and repair tube amps. http://amps.monkeymatic.com
Re: Peavey Artist 240
OK, I agree. But B+ hits pins4 of the left-hand power tubes first, then goes thru 100R resistors, then to the pins4 of right-hand tubes. Doesn't this mean only half the tubes are protected by screen limiting resistors?
I build and repair tube amps. http://amps.monkeymatic.com
Re: Peavey Artist 240
Doesn't the classic 30 do something similar?
Re: Peavey Artist 240
I usually add screens to these when time/budget allows.
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Stevem
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Re: Peavey Artist 240
If there really is only two 100 ohm resistors then it looks to me that no matter how you cut it only the screens of the first two output tubes off the PI are getting the voltage drop.
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Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!