In Reply to: RE: UTC output transformers LS-63 posted by Tre' on April 15, 2015 at 14:57:27:
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
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- RE: UTC output transformers LS-63 - mqracing 15:05:29 04/15/15 (1)
- RE: UTC output transformers LS-63 - Tre' 15:09:57 04/15/15 (0)