Do I simply need more treatment?

[antispatula]

I hung up some 703, and it did nothing to helpw with the terrible flutter. Do I need more, or am I not covering vital parts, like corners? Please don't give bass trap advice, this is only for mid high freqs for now, seing I'm having enough trouble as it is

The 703 is wrapped up. There are 4 you can see, and 4 not in the picture.

[jaykeMURD]

Got any bass traps? I don't see any, and that can make a pretty big difference in some cases.

[bpape]

Well, bass trapping will do double duty and help both - but assuming you're set on not doing that at this point....

What is the 703 wrapped in? How thick is it? How high up is the flutter?

Looks like you have nothing between the monitors on the front wall - which is a problem. Also looks like you have nothing high on the walls. Lastly, you have nothing of consequence over the windows and a very hard floor that's only partially covered.

In short, yes - you need more absorbtion for mixing purposes.

[antispatula]

So for bass traps, would puting them in the corners help the best?

As for the flutter, I guess I just need more. Should I cover the ceilings?

[Farview]

Originally Posted by antispatula

So for bass traps, would puting them in the corners help the best?

As for the flutter, I guess I just need more. Should I cover the ceilings?

You will get flutter from the ceiling/floor as well as the walls. Any parallel surface.

You need to place the treatments to the left and right of the mix position and above you. Then you need to place them at the reflection points on the walls and ceiling. You can have someone hold a mirror against the wall, if you can see the speakers in the mirror, put some treatment there.

[NL5]

Originally Posted by Farview

You can have someone hold a mirror against the wall, if you can see the speakers in the mirror, put some treatment there.

Great advice!

[bpape]

If you can do the construction and can't tolerate any more absorbtion, try building a modified polycylindrical diffusor on the tops of the walls. It's basically just a couple of wood slats screwed to the wall say 6-7' apart. Cut a slot at an angle in them. Then take a piece of something like 1/4 or 1/8" plywood that's 8' long (cut to whatever width your slats are high - usually a foot or so in this application.)

Bend the plywood so it will slide into the 2 slots you cut leaving the center bowed out. Fill the gap behind with fluffy fiberglass. While not a tru random diffusor, it will disperse sound equally in all directions and also be fairly effective down pretty low in comparison with a QRD or slotted diffusor - and it's a lot easier and cheaper to make.

If you do these high on all 4 walls and kill the vertical corners, you'll go a long way to killing a lot of the slap in the room and making it more controllable. Most people forget about the stuff up higher on the walls.

Bryan

[chris-from-ky]

Originally Posted by bpape

If you do these high on all 4 walls...

Just to clarify what you mean here, do we assume the word "High" to be defined as "close to, if not touching, the ceiling"?

[bpape]

'Zactly.

Most people have most of their treatments say floor to ceiling in the corners, and everything on the wall is from 2' to 6' (assuming 2'x4' std panels). This leaves a huge live spot with nice parallel surfaces from 6' up and is bounded by the ceiling.

You won't kill much of anything with these in terms of absorbtion - just keep it from bouncing back and forth between side walls or front and back. Some folks will leave a 6" gap or so at the top so some of the bass building up in the corners 'slides down' behind the poly and into the fluffy insulation.

[daav]

Originally Posted by bpape

If you can do the construction and can't tolerate any more absorbtion, try building a modified polycylindrical diffusor on the tops of the walls. It's basically just a couple of wood slats screwed to the wall say 6-7' apart. Cut a slot at an angle in them. Then take a piece of something like 1/4 or 1/8" plywood that's 8' long (cut to whatever width your slats are high - usually a foot or so in this application.)

Bend the plywood so it will slide into the 2 slots you cut leaving the center bowed out. Fill the gap behind with fluffy fiberglass. While not a tru random diffusor, it will disperse sound equally in all directions and also be fairly effective down pretty low in comparison with a QRD or slotted diffusor - and it's a lot easier and cheaper to make.

If you do these high on all 4 walls and kill the vertical corners, you'll go a long way to killing a lot of the slap in the room and making it more controllable. Most people forget about the stuff up higher on the walls.

Bryan

nice one, good suggestion.