From: ruffrecords@yahoo.com   
      
   I have been thinking a bit about Patrick's suggestion of using something like   
   an EL84 in an SE   
   headphones amp. I was intrigued that he had built one using a 'cheap' output   
   transformer so I have   
   looked at specs from various suppliers of such transformers. These   
   transformers typically have a   
   primarily inductance of around 10 Henries (at 20 or 40mA) for a nominal 5K   
   match. Now my transformer   
   rule of thumb is you want the primary inductance to be twice the plate load at   
   the lowest frequency   
   of interest (say 20Hz). So for 5K ohms and 20Hz the inductance needs to be   
   getting on for 40 Henries   
   so is not the bass response of these transformers going to suffer somewhat??   
      
   Cheers   
      
   Ian   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)