OK... SO HERE'S WHAT YA CAN EXPECT FROM ABOUT $5 OR $10 WORTH OF BEECH/BIRCH 3/4 in. plywood....
Better. Lots better!
I had some pieces cut to fit all my speakers, sub, and speakers on stands, by an added half inch or so all around.
Put them under each unit and placed them back into their orig positions. Waited a few days for them to settle down into the pile a bit more and turned on the sounds.
Using the same default tune box of late, the Onkyo HT Receiver, Odyssey Stratos SE amp, Bel Canto DAC3, and Sonata IIIs, things were instantly improved. Well, minus the couple days waiting period. lol
I found the sound stage to have now, better depth, become broader and it had slightly closer to the LP a tad. The boomyness of the bass was quite attenuated... but still had good impact. Tones weren't skewed or spotlit, and the bandwidth seemed quite evenly fulfilled. Overall, a clearer cleaner presentation yet all the while, retaining luster and involvement.
A note on 'tightening' of the bass and losing the boom... I believe more listening is required here but it seems to me the tightening of the bass so many refer to is actually due to some attenuation... or loss. mostly in the prominence region or presence... the impact was sure there given my moderate listening level session, but I feel certain that along with the tightening up of the bass, came some bass db loss, as odd as that might sound
I hear and read this salutation wehn it comes to reckoning with the bass area very often, and feel itÂ’s this way... "Yep, less boominess no doubt, but with that came less perceived bass being there". Which to me indidcates some attenuation... turning down of the bass area's SPL".
Overall, though, and this is likely a perceptive item anyhow, I think bass was improved by both addition and subtraction. I'll spend some time concentrating on the CD's which have fine bass and get back here with that... so for now, all I can say in truth is the bass is currently different. The rest of the sonic realm as I said is improved by more than a fair amount.
So it sure does seem as though there is something to this idea of platforms under floorstanding speakers residing upon hollow floors... or at least non solid foundatios... 'foundatios'? That must be Italian for foundations.
...and for less than $10, it was a step in the right direction!