Hmmm…not sure how to size the drawing down. Sorry about that. I’ll see what I can figure out.

Thanks for the feedback MM. I’m going to give my drawing one more shot.

Bottlehead,
I have questions.

What is not parallel?
I calculated up your 8.5' long wall that is offset by .5' at 3.366 degrees. Is that enough of not parallel to matter?

Would building "coves" from the ceiling down help? Think of 30 to 45 degree facets from the ceiling down to maybe 6' on the sidewalls.

Sorry I'm just mulling this stuff around in my brain this morning.

I would go for a symmetrical layout, forget the bumped out wall.  Use open baffle speakers, ours can touch the side walls.  Put some bass traps in the rear closet corners.  diffuse the entire rear wall, do the side walls at the first reflection point.  Put carpet with a thick pyle onto a commercial 1/2 inch pad.  Listen and tweak from there.

Donnie, I think that you’re right - not enough not parallel to make a difference. Still working on the right treatments.

CAJ, thanks for resizing my drawing, and for the suggestions.

I found an absorber chandelier that I ordered from Amazon. I’ll try to post it, but my posting skills seem to be substandard. Maybe I’ll just link to the website.

Thanks, all.
Randy

OK, here it is. I ordered two, so we’ll see.

MM, I’m wondering how you know about this product. Have you tried it? Let me know your experience. My plan is to try it as is, and if I don’t think that it’s effective, I’m thinking that I can put another layer of absorbing material on top of the chandelier. So, we’ll see what I can do with it. With only an 8’ ceiling, I won’t have a lot of room above the chandelier, but there’s a little bit of wiggle room.

Randy

I’m going to echo and expand on some of the comments.

I agree with MM, the chandelier will no do anything for low frequencies, I’m guessing in the grand scheme of things it will be a nice addition, once the lower frequencies are addressed.

I wouldn’t waste one second with a concern about the walls being parallel or not.

In a room that size, the biggest challenge is going to be reducing the lower frequency reverb.

It’s relatively easy to lower the mid and high frequencies. When you get into lower mid bass and bass, it’s going to be problematic. If reverb isn’t lowered uniformly across the frequency spectrum, the room will not sound correct.

In my experience, many times when people say the room has too much treatment or is over treated, it is because the mid and high frequencies reverb has been reduced to a much greater extent than the bass and lower mids.

This is true of most rooms, not just small ones. Small rooms just exacerbate the issue.

You could stick 12” of 703 fiberglass treatment on all the walls and still not do much to reduce below 100Hz.

What I’m about to suggest is a gamble and may not give very good results. For a budget conscious approach, figure out how many boxes of 703 you can fit in the closet and put as many in there as possible. Don’t open the boxes or plastic wrap. One point I did something similar. I bought a bunch of boxes of 703 and lined the wall behind the speakers with them. It wasn’t the prettiest or best solution, for the price I don’t know how to beat it. I would keep the closet doors closed.

This approach will handle as much of the lower frequency reverb as possible with minimal to no impact on higher frequencies.

Even with diaphragmatic absorbers it will be hard to manage the lower frequencies in that space.

Will you be able to get enjoyable sound in the room? Careful tuning and experimentation you can get musical enjoyment in the room.

If I was working with that room with a realistic budget. I would be looking at small speakers that are not full range. Starting to roll off at 60Hz possibly higher.  Shove as much 703 in the closet as possible. 2 panels of 703 2” thick at the first reflection points. Once I got the sound signature from there, fine tune.