Treating a Boxed Corner

[beats4weeks]

So how would you treat this corner? This will be the front right corner of my project mixing room. The left front corner is a 90 degree. I know this isn't ideal to have two different shaped front corners but that's what i have to work with so want to do the best I can with it. Haven't done any software room testing yet (gear and speakers are coming back later this week) - But I'd like to get at least the corner absorbers in place while I still have easy access. The boxed out corner is loosely stuffed with fluffy R-19 from floor to ceiling (surrounding the gas meter it's hiding).

Also - (And this applies to all corners) - It seems the current trend now for good low end absortion is to use the fluffy batts in corners secured behind false fabric walls. I'm a little concerned with doing it this way however because I have an absorbent fabric ceiling with fluffy R-19 between all joists - front to back. So I'm worried that adding more of the same insulation in the corners might absorb too much of the same frequencies or affect the tonal balance in a negative way. Should I go out of my way to use different materials for my corner traps or am I worrying too much? I also have 2" 703 at my disposal which I'll also be using for first reflections / wall treatment. I have enough 703 to use for 4" straddled corners as well if this would be a better route than the fluffy in my case. Whaddya think?

[Ethan Winer]

I can't see enough of the room to say for sure, but what matters most are the outer-most corners. If this were my room I'd cover the entire area with a really big trap.

--Ethan

________________
The Acoustic Treatment Experts

[beats4weeks]

That is indeed an outermost corner. I have 3 treatable corners in my room (the 4th is a hallway). I'm planning on treating all 3 floor to ceiling - my open ceiling is already filled with R19 insulation and covered with fabric. So for the corners, Would you use more of the Fluffy R-19 type batts or 4-6" oc703 straddled with an airgap behind? If I cover the whole boxed corner pictured before the front of my room will be less symmetrical as I can't fit another trap of this size in my other front corner. I'm guessing that the absorption would be more beneficial than the symmetry though. Here's some more pics of my room in progress. Please ignore the position of the desk - things will be moved around. My mixing desk will be in front of the large bookcase/record shelf (front wall). Room measures 14' long and about 12' wide. Thanks for looking.

[Ethan Winer]

Originally Posted by beats4weeks

Would you use more of the Fluffy R-19 type batts or 4-6" oc703 straddled with an airgap behind?

I'd probably do both - very thick rigid fiberglass as wide as possible, then fluffy fiberglass behind.

--Ethan

[Glenn Kuras]

Actually in this case I would (if my room) lay the panels across to the corner to make them 4' wide and stuff fiberglass behind that.

[beats4weeks]

Will it matter if some traps are larger than others or should I go big where I have the space available?

[Ethan Winer]

^^^ Go as big as you can where you can.

--Ethan

[beats4weeks]

OK - 2 Corner traps down - 1 to go Went with 6" of 703 with fluffy fiberglass behind. Pic attached. Last question on the matter of placement. Since the traps are of different sizes - which would be more beneficial - having the larger ones in the front corners of the room or the rear corner?

I ask because I have a little more space than I initially thought at the front corner, and the larger one I built for the rear is taking up more real estate than is ideal. So I was thinking of switching them around - But only if it makes sense from an acoustic standpoint. If it makes no difference I'll prob switch them.

[Glenn Kuras]

You would need to test the room to really see if there was a difference. I will say that either way will work well so I would just move forward.