MkIII to Jadis
Microloook, interesting. How did you do the transition of the MKIII to the Jadis?
Microloook, interesting. How did you do the transition of the MKIII to the Jadis?
Looking at the amp schematic raised a question...
R19 and R20, the grid leak resistors on the KT88 tubes, are only 27k.
R15 and R16+R17, the plate load resistors on the preceding stage 12BH7 are 47k.
Isn't it a problem to load a driver stage that heavily? I would think R19 and R20 should be 150k minimum. Limited by allowable resistance there in fixed bias, which could be a problem with KT88. Have to check the data sheet.
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R19 and R20, the grid leak resistors on the KT88 tubes, are only 27k.
R15 and R16+R17, the plate load resistors on the preceding stage 12BH7 are 47k.
Isn't it a problem to load a driver stage that heavily? I would think R19 and R20 should be 150k minimum. Limited by allowable resistance there in fixed bias, which could be a problem with KT88. Have to check the data sheet.
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