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RE: UTC output transformers LS-63

Tre.

I largely agree with you as regards taking steps to exclude frequencies that an amp is not designed nor capable of handling well.

I remember back in the eighties Frank Van Alstine designed such an input for his ST-70 mods... to my ears the amp sounded better with the filter than without. But that may not have been due to power handling issues either alone or in concert with other performance issues...

I just read about a week ago... his newly produced ST-70 offerings still use an input filter... and if I recall correctly the -3db points are 5 hz and 50khz.

But in terms of low freq cutoff point for the large signal model... the -3db frequencies demonstrated are pretty darn low...

again... what source material is going to have recorded data at these frequencies?

Seems like we are chasing ghosts a bit here...

MSL



Builder of MagneQuest & Peerless transformers since 1989


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