In article , David Looser
wrote:
"Eiron" wrote

An oscilloscope will tell me the gain and phase shift at various
frequencies when I feed the amp with a sine wave.

Scopes are fine for rough amplitude and phase measurements, but for the
sort of precision measurements you would need to obtain the information
you are talking about they really don't cut the mustard.

I have a vague recollection that Keith Howard published some measurements
of LF crossover rates and 'ringing' a year or two ago. But I can't recall
details. If I find out I'll say.

Slainte,

Jim

--
Please use the address on the audiomisc page if you wish to email me.
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html
Audio Misc http://www.audiomisc.co.uk/index.html