Hi guys,
I want to try some KT88 in my JTM45. Currently running KT66s. Anything I need know? Screen resistance?
Thanks!
Help setting up KT88
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Re: Help setting up KT88
I doubt you'll gain much as the KT88s will need a larger PT and OT than stock. Are you trying to increase the output or are you just experimenting tonally?
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Re: Help setting up KT88
try to rebias and to decrease the 220k bias splitters to ca 82k. Also you might like to decrease negative feedback. dependent on voltage, You probably need to increase the screen resistors
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Super 100 amps: 1202-119 & 1202-84
JTM45 RS OT JTM50 JMP50 1959/2203/34/39
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Super 100 amps: 1202-119 & 1202-84
JTM45 RS OT JTM50 JMP50 1959/2203/34/39