Yes, you need to treat the ceiling, especially between speaker and listener. It can make old home theaters sound like they have atmos. Also, we can somewhat compensate for lack of treatments elsewhere here. If you are having resonance/room mode issues you should consider 4" thick panels.
Acoustics experts - a little help please
Hey all,
I have 9 foot ceilings and I sit in a 9 foot equilateral triangle with my speakers. Do I need to treat the ceiling? Absorption or defraction? I'm trying to get a deeper more 3D soundstage.Speakers are 46" from the front wall which is treated with absorption and defraction.
Thanks!