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.   
      
      
   Cheers   
      
   Ian   
   >   
   > There is a tradition of not caring about head amps...as if   
   > they are add-on extras to the main system. These days, they   
   > quite often *are* the main system.   
   >   
   > Ian   
   >   
   >   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)