View Single Post
  #7   Report Post  
Posted to rec.audio.tubes
Analogdino Analogdino is offline
external usenet poster
 
Posts: 5
Default Tales of a Heathkit W7-M amplifier

Quick update:
Tried a pair of good 5881's, bias optimized, even balanced the cathode currents to around 1.5 mA.
No good!
Max p-p volts across 8 ohms = 40 VAC, 200 Hz.
Thus, power = 25 watts.
Pretty much same as 6L6's, not really surprised.
We soldier on...
Cheers,
Roger