From: ruffrecords@yahoo.com   
      
   Ian Iveson wrote:   
   > Ian Bell wrote:   
   >   
   >>> It likely depends on how close saturation is to 20Hz, *at   
   >>> the signal level the OPT is likely to encounter*. If   
   >>> you're   
   >>> willing to use feedback, and the signal is small, you may   
   >>> be   
   >>> OK. An appropriate filter at the input should make   
   >>> saturation impossible.   
   >   
   >> One thing I was wondering was if I use a transformer with   
   >> a nominal 16 ohm secondary but use it with 32 ohm   
   >> headphones for example, then ra reflected into the   
   >> secondary would be so low relative to the load that  the   
   >> output could be considered essentially a voltage source.   
   >> Equally the load reflected to the plate would be four   
   >> times higher so distortion would be lower?   
   >>   
   >>> Patrick'll be along in a tick.   
   >>>   
   >>> Twice the plate load? It *is* the anode load isn't it? 2   
   >>> to   
   >>> 3 times ra, depending on whether you want power or   
   >>> fidelity   
   >>> respectively, broadly speaking.   
   >>   
   >> Yes, but you are thinking in power amp terms alone and as   
   >> I have said before I have no power amp experience. My rule   
   >> applies to low level transformers e.g. mic transformers   
   >> and for broadly similar reasons.   
   >   
   > 10H is in shunt with load. Lower load makes shunt more   
   > significant.   
      
   Yeah but, no but, my load is higher not lower.   
      
   Cheers   
      
   Ian   
      
     Try sim. Should shift 0 to higher F. Use fb to   
   > restore...what then?   
   >   
   > Ian, who's English has been wrecked by Twitter.   
   >   
   >   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)