OTL Asylum

I see a lot of true in what you say....

79.53.228.135

In Reply to: RE: Spice **does** lie posted by Ralph on October 29, 2009 at 08:37:10

You are certainly right when you say that the only way to ascertain the goodness of a model is to build and listen (try some adjustments and re-listen). However my limited experience shows that the computer models I have used so far are quite accurate. When I say 'quite accurate' I mean that they are good enough for designing a good hi-fi tube amplifier (as I do not know the road to hi-end/excellence).
As a matter of fact I can not explain why I prefer listening to my OTL amplifier rather than the other one (with the output transformer) that I have built with the same tubes (12AT7, 6SN7 and 4x-6080/12AS7 per channel).
The transformer one is more powerful, it exhibits better measured performance but, whatever adjustment I have tried so far, I still prefer the OTL.
In conclusion, I think that the computer models are quite accurate in modeling electrical signal distortion, hum & bias, but they fail to model the real listening experience, which is a subjective very complex phenomenon.

Best Regards
Luca

ecc230

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