[pureiso]

Ok, I just came across a good deal on some OC 703 and decided to jump right into treating my room.  My room is 11'x20'x8'  with the fronts on the 11' wall (yes, not optimal but really the only option).  Carpet on the floor, ceiling is textured drywall, and the walls are 80% drywall covered by paneling, 15% painted brick, and 5% windows. 

The back wall has a shelf with tons of my wife's crafty stuff, and the subwoofer is also located near the rear corner since that seems to be the best response.

So first thing to tacle is first reflections, then move onto bass response? 

I got 16 3" 703 panels to play with... still have yet to cover or frame so I can do the superchunk or anything else.

[bpape]

Both will need to be addressed.  I would try to find out if you're having any phase cancellations or peaks coming off the side walls to better determine how thick those panels need to be.  8' ceilings are also notorious for issues in the 70ish Hz range

Sounds like the rear corners are already spoken for as is the center of the rear wall.   Probably the front corners are your best option for some deep bass control.

Bryan

[pureiso]

Both will need to be addressed.  I would try to find out if you're having any phase cancellations or peaks coming off the side walls to better determine how thick those panels need to be.  8' ceilings are also notorious for issues in the 70ish Hz range

Sounds like the rear corners are already spoken for as is the center of the rear wall.   Probably the front corners are your best option for some deep bass control.

Bryan

One rear corner is a possibility for a stack floor to ceiling.  It would be directly next to the subwoofer though.

The two front corners I can possibly do two panels at an angle or stacks about 5' high.

[Mike82]

I'd also take a look at the panelling to insure that it is as firmly attached to the underlayment as to minimize any resonant vibration which may color the room's sonics.

[pureiso]

I'd also take a look at the panelling to insure that it is as firmly attached to the underlayment as to minimize any resonant vibration which may color the room's sonics.

Yeah, I have been debating on that.  Hopefully in the next few years I will be redoing the entire framing, so I may just live with it for now.

It is not bad enough to buzz while listening beyond my usual listening level, but it definitely has been something I have debated on tearing down.

[PDR]

Question.....

If placing a 2'x4' by 4" thick insulated panel at first reflection points I have read it suppose to be 4" away from the wall....true?

Thanks

[Ethan Winer]

An air space isn't strictly needed, but it lets the panel absorb to a lower frequency (which is always welcome), and also makes the panel behave as if it were physically larger. In this case, as if it were about 2-1/2 feet by 4-1/2 feet instead of only 2x4.

--Ethan

[Nuance]

^ Does the same also apply with corner bass traps, or should those be placed snug into the corners?

[Ethan Winer]

Corner traps work best snug in the corners, but there's a large (and varying) gap inherent with that.

--Ethan

[bpape]

One rear corner is a possibility for a stack floor to ceiling.  It would be directly next to the subwoofer though.

The two front corners I can possibly do two panels at an angle or stacks about 5' high.

Sorry - between being a bit under the weather and busy at work, haven't been here as much as I should.

I would try the front corners first before committing to anything else.

Bryan