Ceiling diffusion

Diffusion directly overhead works the best to get the most impact from the panels.

You can try diffusion or absorption at the first reflection points. I have diffusion at the first reflection points on my ceiling, but I want to try absorption to see how it sounds. I also have diffusion directly overhead.

Let me know what you find. It's going to be some time before I experiment.

Hi how do you determine the 1st point of reflection on the ceiling? Any ideas that I can use? Thanks.

Thanks for the responses. I will start with first reflection points and experiment from there.

When facing my speakers from my listening chair my ceiling slants up from right to left from 7.8ft to a little over 10 feet. Should the diffusion/absorbtion panels be mounted flush on the ceiling or hung so they are parallel to the floor?

Ore layer,
You mention ahaving a flutter echo problem. If you have a carpeted floor between the speakers and listening chair, then the flutter echoes may not be ceiling related. Do you have a carpet?

Personally, I have ceiling diffusion from the front of the speakers to the listening chair and 8 feet in width. Above the listening chair is a bass trap to reduce a height modal null. Of course your room is different but first start with covering 1st reflection points and them test out directly above your head.

I would be surprised if having the ceiling diffusion at different heights on your sloping ceiling makes an audible difference as the sitting distance is not near field.