Schumann Resonator

Thanks @willgolf for the honest assessment. Sorry to hear about your vision problems which should only improve your hearing. Sounds like you are a major tweaker and can determine which are worthwhile. I'm not surprised the Schumann Resonator is not one of them.

Still looking for a blind test positive....

Gotta love Pat Metheny The first album, all white with Lyle Mays (R.I.P) on piano in the original Pat Metheny Group) is the original audiophile test album that was played during my first real stereo purchase in 1980. All Yamaha....except cartridge Micro acoustics I think). Heavily influenced by the salesman and the price range.

+1  Lyle Mays (R.I.P.)   Pat and Lyle are my favorite modern composers/artists.

I’ve seen Pat Metheny/PM Group probably 8-10 times (including the disastrous Orchestrion tour) and have at least 12 albums, the majority on vinyl.

I wouldn’t say favorite though....that has to be Donald Fagen, never to tour again solo, only as Steely Dan. R.I.P Walter Becker. 15+ concerts and every single original SD or DF album (no greatest hits that kill album themes-except Alive in America) released in the US on vinyl, and the other handful on CD. Maybe 15 albums.... Never miss a tour. Hopefully he’ll come out when the venues open to capacity. Even bought his book and met him briefly. He’s not the warmest and fuzziest....

"In several carvings was shown the Schumann Generator Coil, a spiral circle created by a single line."

How do you know it was a Schumann Generator Coil and not, for example, pig's tail or something third?

MC -- I don't know if my Viking Acoustic Grande Voix Dual Horn speakers are the reason.  I suppose I could try the SR's in my Theater Room where I have Tekton Double Impact In Wall speakers to see what the results are there.  

Mahgist -- I will look into your additional tweaks.

Sokogear - The early Pat Metheny was better than his later stuff.  He is such a great guitarist and great to listen to.  I also Love Michael Hedges RIP, Kaki King, Al DiMeola, Explosions in the Sky for guitar rock, John McLaughlin to name a few.