Know of a "Dirt Cheap" tweak?

No need to be snippy, Sabai. I started designing and selling acoustic resonators before acoustic resonators were even a gleam in Franck Tchang’s eye. That’s why I know that a SPL meter is the only real way to determine where resonators should be placed in any room. Now, I'm not saying that using Franck Tchang's diagram won't work, it will. It will get you around 50% of my SPL meter method. 

"Never get behind anyone 100%." - my old Boss at NASA

have a nice day

Now, if you opt to do ALL of the above.....

Cups, tile, bricks, sandbags, BB's, metal plates, floor braces, et all...

Your gear will resemble a construction site that needs 'tidying up', and edging towards my 'steampunk' speakers' in general appearance.

Please post pictures....curious minds need a good laugh. ;)

...and Yes, one of your legs is now longer than the other....*smirk*

" One of your legs is shorter than the other and both of your feets too long"

geoffkait,

Simply being direct and to the point. You stated, " ... you’re only guessing if you don’t use a SPL meter." Do you mean that Frank Tchang was only guessing? But then you stated, "It [Franck's diagram] will get you around 50% of my SPL meter method." If so, nice to hear Franck made some good guesses and that your method is twice as good as Franck's guess work.

asvjerry,

My room is indeed untidy -- but the sound is good.