Newbie questions about minimal treatment in a large room

[lattiboy]

Hey all,

We recently converted our garage into a gym/theater. It's also my main listening space. The room is 23' x 24' ,10' ceilings, new drywall with semigloss paint, and padded carpeting. I've been interested in room treatment, but I found it kind of daunting and I didn't want to invest a ton of cash and work in something I wasn't sure about. Well, some guy on OfferUp had a nice set of Adurex foam (4 bass traps and 4 2x3 panels for $40!), so I grabbed them.

My main issue is that my listening space is very off-center in this large room. I have my MS Paint masterpiece here:



My big question is how I treat the room because of the offset. Do I bother with bass traps on the left side of the room? Do I just double-up on the right side doing floors and ceilings?

Equipment:

Mains: Sony SS-TL5
Sub: Infinity Reference SUB12
Center: DIY Alpair 12p single-driver speaker
Amp: Parasound HCA-1203A
all running from an Oppo BDP-103 with a Chromecast attached

 

[lattiboy]

Also, the drawing isn't super proportional. The back of the couch is probably about 17' from the wall-mounted screen. The screen is 11' wide with the bezel, and the speakers are about 13' apart, turned in about 15 degrees.

 

[Ross6860]

Can you rotate the couch and A/V setup 90° clockwise and place it centered on the short wall?

Even 45° maybe worth a try.

 

[imral3]

Can you rotate the couch and A/V setup 90° clockwise and place it centered on the short wall?

I second this!!

 

[lattiboy]

Can you rotate the couch and A/V setup 90° clockwise and place it centered on the short wall?

Even 45° maybe worth a try.

Not really. I mean, anything is possible with the power of imagination and all that, but having the gym by the window was a wife request and the layout of the room with the two doors doesn't make a ton of sense with it rotated. As it is, you can walk through the room without walking in front of the gym or the screen.

EDIT: I see what you're saying now! It would be kind of a pain as the screen and projector are mounted perfectly. I could do it, but I'd like to try other options first to avoid this.

 

[tomlinmgt]

You need absorption panels on the short wall to the right of the couch located at the first reflection points (for both speakers). To determine where these points are, sit down on the couch and have your wife hold a mirror against the wall approximately the same height above the floor as your head is when seated on the couch, starting at a spot just ahead of where the speakers are then have her slide the mirror along the wall moving toward the couch. Place absorption at each of the two spots where you (while seated at the couch) can see a reflection of each speaker in the mirror. Do the same thing on the wall behind you, turning around to look so you can see the mirror.

 

[Rybeam]

Cheap, easy and effective. Place a rug between the couch and speakers. Hang a wooden rod / shower rod or two behind the couch and hang cloth panels designed for sliding glass doors from it, as many as you can. The more wrinkles the larger the surface area. You can slide them out of the way when you are not listening. The less reflections the better.

 

[Old Guy8]

I'm not that much into HT. You could try moving L, C, and R speakers away from front wall, 2', 3', 4', 5'. If sketch shows currently nearly at wall. Need room from wall.
If you want to to extend first reflection point absorber panels. Could do ceiling at mirror reflection points, along with side walls.