[Amps] Amp Supply LK500-zc tube asymmetry

[Brian Moran]

Thanks for the suggestions, DD and Tom; I got into the input circuitry; Tom you were right on -- found the grids 'floating' through some bypass caps; RF was being fed through 10ohm resistors to the filament leads (probaby not to bad); the filament 'bus' grounded through 1 ohm/ 25pf series network... removing all of these extra parts and bringing it back to the schematic yields evenly-heating tubes on keydown, and 1300 watts output with 80w drive.
   
  Brian N9ADG