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06-06-2023, 10:22 AM
Hi Champ81
Screen resistors in guitar amps should be wired as in TUT2 Fig.3-22 - which is the way they are wired in pretty much every guitar amp and every schematic in the TUT-series. There should be individual 1k per tube. A few amps use a shared resistor, which is fine for hifi but not for MI, which TUT also shows.
Fig.3-23 is labelled "Triode-connected tetrodes and pentodes" and does not apply here. The "enhanced" figure applies ONLY to the next section, which uses the screen as a control grid with signal applied to it.
Rewire the screen resistors as stock but use the safer value.
Screen resistors in guitar amps should be wired as in TUT2 Fig.3-22 - which is the way they are wired in pretty much every guitar amp and every schematic in the TUT-series. There should be individual 1k per tube. A few amps use a shared resistor, which is fine for hifi but not for MI, which TUT also shows.
Fig.3-23 is labelled "Triode-connected tetrodes and pentodes" and does not apply here. The "enhanced" figure applies ONLY to the next section, which uses the screen as a control grid with signal applied to it.
Rewire the screen resistors as stock but use the safer value.
