Control ceiling designs?

The standard options seem to be either flat or raked upward from front to back. I was considering angling the ceiling in an attempt to reduce standing waves and flutter. I also believed that angling the ceiling away from the mix position would reduce early reflections at the mix position. Since the control room in question is 22 feet long, anything other than a slight angle creates a large drop in ceiling height. I considered an "A" style design (Front to Back) acknowledging that the area beneath the peak may require some additional treatment. A designer and a couple of recording engineers have weighed in and say that an "A" is the worst thing one could do. I have a hard time understanding why angles in the lateral dimensions is desirable, but skewing a surface in the vertical dimension is not. What gives? Any thoughts? The unfinished height is 12 feet. My initial design would have resulted in an angle of just under 8 degrees on each side of the peak. Depending on who you talk to, 6 to 12 degrees is necessary to achieve any benefit. I concede that room response and treatment calculations are far easier if the room is rectangular. The walls are already constructed and are "A" shaped on each side with an angle of 6 degrees on each resulting in a 12 degree flare. Thanks in advance for any clarity that can be offered.

Well i won't be of any help here, but let just say that i am in the same situation as you. you can check my project here. http://www.johnlsayers.com/phpBB2/viewt ... highlight= My side walls are in a 15 degres angle and i plan to do the same with my ceiling from front to back. I got some well know acoustician here in Montreal telling me not to splayed my walls or angle my ceiling, "just make a rectagular room and pack it with acoustic treatment" ! I think that answer has more to do with the predictability in acoustic response than anything else. Here<s an answer i got from knightfly on what would be a correct ceiling angle:

knightfly wrote:

Anything over 6 degrees will help with flutter echo; for RFZ without absorption you need geometry. Typically more around 30 degrees for ceiling over the mix position, but this depends on dimensions between speakers and your head, ceiling height, etc - it needs to be drawn out to scale to see where reflections will go, and angled enough to redirect them AWAY from your head... Steve

You may also check those two thread of mine, wich have more to do with the practical side of things,but you maybe you'll find some answers http://www.johnlsayers.com/phpBB2/viewt ... highlight= http://www.johnlsayers.com/phpBB2/viewt ... highlight= Regards