acoustic system resonators

Excuse the grammar. I type too fast when saying the obvious.

Has anybody measured the output of a whole system with and without these things and reported the difference? It seems if its audible it should be measurable.

I know absolutely nothing about them, but is a show environment the best place to critically evaluate anything?
And no, I don't want to buy the Brooklyn Bridge, too old fashioned looking for me. I like retro but not that retro plus I dont have the space for it right now.

Rja wrote: "I know absolutely nothing about them, but is a show environment the best place to critically evaluate anything?" Of course not. The only reason I responded is to indicate that this discussion is not my first exposure to the devices. I did get a chance to speak with someone from the company, as well.

Kal

Understanding how those devices MAY actually work is beyond me.