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Yes. Very few reported ABX and DBT tests meet the low enough Beta requirement. So, they prove nothing. I can recall one, by Audio magazine a few decades ago, about speaker cables IIRC which didn't. And, shouldn't have been published or discussed. The points about how many people and how seated, are relevant to another such by HFN&RR where the participants were across and in depth. Listening to a stereo system!!!!!! Even if n had been high enough, I still didn't pay any attention to it. In my 4 unit Statistics sub-major I had a Distinction average. ? B. Comm, Mgmt Science. Uni here is unlike College. Most of the folks who are employed as Economists, Systems Analysts / Bus. Anal., Programmers, etc have a single degree. But I was a paid Tutor in IS from 2nd semester on - late 80s to 90s ? A 'mid-life crisis' degree, backed up by a history in economic / industry policy analysis, using main-frames and minis. Lots of 'Aha' moments. Having worked for Canberra's top Hi-fi shop, I do have some VDH interconnects between sources and the pre-amp, as I got them at Duratone's cost, ;-) and ;-). I've had them for a LONG time. But, the 'long', <20 ft cables, to the power amps are digital-network coax. THE RCA plugs and sockets are gold plated and fit tight. I do clean the sockets and plugs, once a year. The Pre's output impedance is 600 ohms, and there are two pairs of cables. It's early morning and I haven't looked at an audio manual, but I 'think' that comes to 300 ohms. Into several Kohms. Not that it matters. I have used laser devices and protractors to set up my sphere speakers and their angling back, aimed at me. Based on measurements by their builders. Time and phase coherence, matters to me, as does absolute polarity, on simple stereo recordings. It can matter on typical Decca Xmas tree recordings, too. Most visitors agree, but not all. And yet! ... I'm a former hunter and infantryman, and range officer and marksmanship instructor!!! I did wear ear muffs when it was practical / range safe. Perhaps it's all that singing as a leader in a large group of firsts boy sopranos in a cathedral. 'Timing and Pitch! Tim-Jim!' he said to me. I'm not going to test for anything, until I install the QUADs and subs. All, the sub boxes are now constructed, but not stuffed or 'finished'. ? Way too hot in the big garage, by 9 AM every day, plus the smoke haze that now seems permanent*. And I water and fertilise, most mornings on the entire block, while it's still cool enough, plus *.
Warmest
Tim Bailey
Skeptical Measurer & Audio Scrounger
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