ceiling acoustic treatment

From the photos, I would suggest first working on side wall reflections before worrying about the ceiling. I have a cathedral ceiling and did eventually put 6 2x4 panels up there of Owens 705 with Ready Bags from Ready Acoustics Co. I did angle them like louvers. They are about 18" from the crest of the ceiling. The result was less ringing, clearer trebles, less stridency in female vocals. I think in general that putting a panel straight on a wall will only limit higher frequencies, but putting one several inches from the wall or ceiling will help trap lower frequencies as well.

Thanks everyone and sorry for the confusion, but my current system pics are before the recent move into my basement. Basement room is 18'x33'x10 ceilings. I'll update system pics when I get a little farther along

I'm already experimenting with panels on side walls.

I'm just curious what the acoustic difference is for spacing the ceiling panels away from the surface.

I went a different route - take a look at my system for more information. The approach I used works extremely well, and looks better too - IMO

Good listening

Peter

I think......no need space between the ceiling & panels. But sound quality greatly depends on the the effectiveness of the panels. I am not sure about your panels. But i know a manufacturer, they provide very good looking & effective acoustic panels at a very low price. In the next before making a decision you can visit them first(http://www.acousticmanufacturer.com/Noise-Barrier-on-Temporary-Fence-for-Construction-Site.html). Thank you.