Question about wall & ceiling panels

[Keith Moore]

So I'm getting all geared up to treat my control room. Doing 4 corner traps 6" deep and 1 rear wall bass trap 6" deep as well. The corner traps will be FSK faced. My question is with any of the wall & ceiling panels. How thick should they be and do they need any distance from their attached surface?

Thanks,

Keith Moore

[Glenn Kuras]

My question is with any of the wall & ceiling panels. How thick should they be and do they need any distance from their attached surface?

For things like early reflection points (What Are Early Reflection Points. SPOTLIGHT:Bob Ebeling - Revolution Studio) and general decay, you can use 2" and space it off the wall 2"

[Keith Moore]

Originally Posted by Glenn Kuras

For things like early reflection points (What Are Early Reflection Points. SPOTLIGHT:Bob Ebeling - Revolution Studio) and general decay, you can use 2" and space it off the wall 2"

Hey Glenn thanks for the reply. If you could answer me 2 more questions I'd be really happy and hopefully ready to start building.

1) If I'm framing my panels I'm guessing I'd use a 4" frame for a 2" foam panel. But would this frame butt right against the wall? Same question with ceiling panels.

2) For a back wall bass trap being 6" deep would this air gap rule also apply or can it rest directly against the wall. If not then again I ask 12" frame butt up against the wall?

Thanks soooooo much for your time.

Keith Moore

[Glenn Kuras]

1) If the gap is built into the frame then you do not need to space it.

2) For the back wall you don't need to go a full 12" but put a few inch gap if possible

[Keith Moore]

Originally Posted by Glenn Kuras

1) If the gap is built into the frame then you do not need to space it.

2) For the back wall you don't need to go a full 12" but put a few inch gap if possible

Thanks so much again Glenn,

So I'm figuring an 8" frame will do. 6" foam with 2" gap. Also is the bass trap still useful if the back wall is at an angle? Somewhere close to 45 degrees I think. Was also thinking about putting diffusors on the wall to the left and right of the trap if that's a good idea for an angled rear wall.

[Glenn Kuras]

Not sure what you mean by the angle but if 6" thick then your fine. BTW rigid fiberglass or mineral wool is what most people use. If you use foam you have to use acoustic foam and that stuff from ebay is NOT acoustic foam.

[Keith Moore]

Originally Posted by Glenn Kuras

Not sure what you mean by the angle but if 6" thick then your fine. BTW rigid fiberglass or mineral wool is what most people use. If you use foam you have to use acoustic foam and that stuff from ebay is NOT acoustic foam.

No I'm using OC703. Sorry I have no idea why I said foam. By the angled wall I mean that it isn't parallel to the front wall. It's somewhere around a 45 degree angle from the front wall. Just not sure if back wall bass trapping is only meant for situations where the rear wall is parallel with the front wall.

Hope that makes more sense. If I had a simple program to do a drawing I would.

[Glenn Kuras]

Originally Posted by Keith Moore

No I'm using OC703. Sorry I have no idea why I said foam. By the angled wall I mean that it isn't parallel to the front wall. It's somewhere around a 45 degree angle from the front wall. Just not sure if back wall bass trapping is only meant for situations where the rear wall is parallel with the front wall.

Hope that makes more sense. If I had a simple program to do a drawing I would.

Well the angle will help with the upper frequencies but you still will have low end problems.

[Keith Moore]

Originally Posted by Glenn Kuras

Well the angle will help with the upper frequencies but you still will have low end problems.

Thanks so much for all your help Glenn. Both Ethan and yourself offer a ton of great advice to all of us. Up until now I have been using Auralex foam panels with IK Multimedia's ARC software (Which does a great job btw) But I'm really looking foward to making this improvements. Just wanted to get all the education I can get so I end up doing it once.