Estimating transformer quality by size

Seems to me it should be possible to estimate the likely quality of
a competently built amplifier by comparing the size of the OPT with
that of the output valves.

What would be a healthy volume ratio for EI transformers, and how
much would this change with toroids, C-cores, etc?

So many ready built amplifiers, particularly from the Orient, appear
to me to have very small OPTs.

cheers, Ian


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Relevant Pages

  • Re: Estimating transformer quality by size
    ... >a competently built amplifier by comparing the size of the OPT with ... I recently ordered 2 different power rated transformers, ... Comparing to other manufacturers would be a bitch! ...
    (rec.audio.tubes)
  • Re: Estimating transformer quality by size
    ... >>a competently built amplifier by comparing the size of the OPT with ... > I recently ordered 2 different power rated transformers, ... > Comparing to other manufacturers would be a bitch! ...
    (rec.audio.tubes)
  • Re: Estimating transformer quality by size
    ... Ian Iveson wrote: ... > a competently built amplifier by comparing the size of the OPT with ... Just what makes a decent OPT is all described in RDH4, ... Peanut sized asian OPTs are usually OK at low levels. ...
    (rec.audio.tubes)