If the power supply in box "A" has a such nasty effect on say box "B", "C", and "D" which are in close proximity to it.....wouldn't it cause absolute carnage to itself even moreso? It's power supply is in the very same box.
What are the symptoms of the problems caused because I don't notice a thing?
I just now hooked up my portable Grado amp to a MD player and while listening to it through my Grados with music as well as while on pause.....moved the amp all around, up down, front, back, sideways, behind every piece of equipment in the photo....actually touching all pieces....receiver, amp, tuner, MG Head, Headmaster, Stereo-Link, computer tower, 17 " monitor....all pieces turned on at the same time....(which never happens under normal circumstances by the way)....and heard nothing different at all. No hum, buzz, or change in fidelity. I even sat the Grado amp on top of the Head's two transformers and placed it as close as I could to the glowing tubes.
I then repeated the same thing by moving the MD Player all around, again actually touching each piece, front, back, and sides.
Same thing.
I even dragged the amp and then the MD player across the screen of the monitor and pushed it as close into the connecting wires at the back of all the components as I could. I covered every square inch of exposed components. Nada.
So whatever harm it's supposed to be doing, I'm not noticing it.
I can't help but think that with the millions of dollars in R&D spent by dozens of electronics companies....big and small....that they too would have access to the sort of test equipment you speak of and would be well aware of EMI, RFI, and all the other nasties. And that if it were a huge problem, they would (A) do something to rectify it. Or (B) strongly recommend you don't put individual components in close proximity to each other.
A good friend of mine was the permanent on location head electrician for IBM in Canada. He took me through their Canadian operations a couple of times.
I've seen racks containing tens of thousands of dollars of audio components....used in the million dollar....spare no expense....state of the art a/v teaching rooms at IBM's main buildings in Markham, Ontario. Racks containing several large amplifiers stacked along with all sorts of A/V and computer components. All this sitting on top of a hollow floor jammed packed with all sorts of cables.
I know lBM isn't Mark Levinson, but still, they seemed rather concerned about everything operating absolutely perfect.
It seems that ( among many other things ) this sort of "detail" (not stacking components) is only a concern of the ultra high end community.
Perhaps some of the ultra high end pieces of equipment....like $50,000 hand built amps, designed by brilliant, one man band, but seriously under-funded with extremely limited engineering resources sort of companies, can cause serious leakage problems.
I don't doubt that there are various things being emitted by certain components, but I do question whether in the real world, especially with mid-fi audio components, it has a noticable effect.
