The "most foolish" loudspeaker tweak/upgrade ... is


I suggest Von Schweikert Audio's "ULTRA Internal Wire Upgrade" at a 'mere' $39,700..

ptss
I suspect the reasons people pay $39K for a hook-up wire "upgrade" have little to do with the resulting sound.
So mitch2 what are the reasons?
One can only guess.  But has anyone actually done this 'upgrade'? Surely it is impossible for a human being to be that stupid.
The real problem with the whole thing is that High Technology especially when linked to NASA or DoD or DARPA is that high technology is as high technology does when it comes to sound quality. Audiophiles are the final arbiters of what actually works, not some secrecy shrouded burocracy. The marketing ploy of Space Age Technology or some sort of trickle down ultra technology is as old as the hills. Now if Schweikert had said anything about 7 nines copper, cryogenics or directionality of wire or even high Frequency high permeability alloys then I would put a little more credibility in his speaker wire mod. If memory serves Schweikert used to use Analysis Plus wiring in his speakers which actually seems like good move. 

The only foolish speaker upgrade is buying speakers that cant interact with yr listening room.