Thanks guys, appreciate the insight.
Took some time tonight to see what the '
it's gotta be true, I read it on the' interwebs had to say. Stumbled on this:
https://www.qacoustics.co.uk/blog/2016/06/08/bi-wiring-speakers-exploration-benefits/
I get the approach taken. I get the spectral analysis from a control-group (low freqs and high freqs) standpoint too. I was saddened to see the emergence of the IMD angle - because that alone is super controversial - but again maybe it matters. But what I did notice after reading that 'article' a couple of times over was a failure by the writer to address the the audible impact of the IMD components in the first place and specifically, the audible impact of the attenuation's of the electrically quantified IMD at such low levels.
Or in other words, is measured IMD at levels down some 50, 60 or 70 db from the clean signal even perceivable in the first place ? These pure tone experiments seem rather sketchy to me.
And the test method seems suspicious to me too. They measured the test pattern directly off the CD player output prior to amplification in an "all in one" system.
LOL ... what the hell was it ... Sound Design gear ? So haven't they simply proven that the amplifier stage in that all-in-one is a pile of s h ! t, against their speakers, performance wise ? ... or maybe that their cross-over design is junk ... or both ?
The notes at the bottom of that article pretty much debunks the effort. Kudos AND shame to the writer for admitting it.
*
They reference/cite this Peavey engineer as a basis for their scientific method:
http://www.geocities.ws/jonrisch/PhiSpectral3.htm
