Hello all, long time lurker/sporadic poster here with a question concerning my   
   current project.   
      
   I recently rebuilt a couple of Quad II's from what was pretty bad shape with   
   parts missing etc. Everything now works and sounds great and even looks mostly   
   original... except for the highish B+ Im getting. This is the new   
   configuration:   
      
   Rectifier tube (5AR4) - 33uF/450v - the original choke - 47uF/450v   
      
   With 5AR4/GZ34 I am getting around 380-385v at the rectifier. I would like to   
   use this tube since it is more modern than the GZ32/5V4. With GZ32 there is a   
   bit of voltage drop to 372v or so but its still much higher than the original   
   schematic.   
      
   I raised the cathode R to 220 ohms to go a bit more easy on the few vintage   
   KT66's that I have, and also to be able to use 6L6GC. KT's are showing 29,5v   
   on the cathodes, and 6L6 (old RCA) are at 27v in the same configuration.   
      
   Do you think the transformers and chokes are up to such a high B+ in prolonged   
   use? How about tube life? Could I try, say, a 5R4 instead of the indirectly   
   heated ones (for the bigger voltage drop) or is this asking for trouble.   
   I would like this rebuild to last long and be trouble free and run as cool as   
   possible within its design limitations.   
   Thanks for reading!   
   Martin   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)