ok im opening pandoras box here.(treatment vs framed wall art)

Just remember that diffusion is just as important as absorption, sometimes even more so.

Buy Jim Smith's book "Get Better Sound"!

Thanks for all the input
     As i stated earlier i am getting my audio room under control (new house) .My Ht room is big and has alot of slap echo to deal with.Which is back burnered right now ,i'm living with it .But my original post was regarding some of the mega systems here on the gon virtual.I see some serious setups and wonder how the hell does he have 20 framed glass pics on his walls??? How is he/she   battling the resonation that has to be taking place .

To David Pritchard. Please clarify what a "transducer" is--and how do those items you mention transduce? Thanks.

"But my original post was regarding some of the mega systems here on the gon virtual.I see some serious setups and wonder how the hell does he have 20 framed glass pics on his walls??? How is he/she battling the resonation that has to be taking place."

good question. One would see the same situation in ALL rooms at CES and other audio shows. No one seems to address the potential resonance issue related to ranked glass pictures on the wall. Which actually begs the question, is having resonators on the wall a bad thing? I can image these unintentional resonators might actually be beneficial to the sound by dissipating unwanted energy that occurs when the walls vibrate. And a lot less expensive than those precious metal tiny bowl acoustic resonators.