Ian Iveson wrote:
Jim Lesurf wrote:

I've just put up a new web page at

http://www.audiomisc.co.uk/HFN/Squar...quareDeal.html

that looks at the use of squarewaves for assessing
amplifiers, etc.

Prompted to do this by noticing squarewave results being
used to present
ideas about speaker cables, and realising that the humble
squarewave has
largely fallen into disuse.

I've also tweaked the site a bit, and hope to make a few
other minor
improvements and alterations soon.

Slainte,

Jim


The cd-player source argument is a red herring, surely?
Especially combined with the arbitrary example of a 5k
square wave. 1k would give you plenty harmonics, especially
if you weren't daft and used a proper source.

You conclude that reviewers have abandoned the square wave,
but did they ever use it much anyway?

Without in anyway claiming to be an expert on these things I vaguely seem to
remember that most amp tests in the HI-Fi mags of the 1970's and 80's had a
square wave read out printed somewhere in the test. I also *seem* to remember
these were at 1k ...but of course these are distant and increasingly dim
memories.