Absorption on parallel walls (behind the mixing position)

[Ciaccona]

I'm by no means an expert but

1. These panels you are referring to seem to be diffusors (as opposed to absorbers).

2. Maybe by placing the left diffusor
in the back your friend tried to compensate for the missing bass trap in the corner.
Since diffusors rarely go lower than 400 Hz the effect is probably small.

Let's see what the guys say!

[kasmira]

Originally Posted by Ciaccona

I'm by no means an expert but

1. These panels you are referring to seem to be diffusors (as opposed to absorbers).

Actually, they seem to be foam or perhaps Auralex SonoSuede panels or something of the like (as not many acoustic companies sell broadband 2x2 traps, other than RealTraps I believe)

They should be symmetrical in terms of your first reflections. Other than that back corner, those 45 degree turned panels also asymmetrical. IMO, thin panels won't really mess your stereo image up behind you (provided they don't cover large portions of the wall) very much.

When you have them asymmetrically like that, it will actually help reduce flutter echo...and behind you is the best place to treat asymmetrically if it is necessary. If it is the only corner option other than the fronts..I would go for it. If you are worried about it, test the difference between having them in that back wall/wall corner vs. the back wall/ceiling corner.

[Famudeedo]

Originally Posted by Ciaccona

I'm by no means an expert but

1. These panels you are referring to seem to be diffusors (as opposed to absorbers).

2. Maybe by placing the left diffusor
in the back your friend tried to compensate for the missing bass trap in the corner.
Since diffusors rarely go lower than 400 Hz the effect is probably small.

Let's see what the guys say!

They are absorbers.. But insightful nonetheless

[Famudeedo]

Kasmira- good idea about trying different approaches. Maybe there is something to the asymmetrical setup..

[Glenn Kuras]

Originally Posted by Famudeedo

Kasmira- good idea about trying different approaches. Maybe there is something to the asymmetrical setup..

Maybe but you really would need to test to make sure. You can use the following program to test.
Room EQ Wizard Tutorial Video

[Famudeedo]

Glenn, thanks for the link. I'll give it a go

[BriHar]

Possibly your "expert" has some experience in recording studio design. Assymetry in a recording studio is quite common - even desireable. In a control room or mixing room however, one strives for symmetry.
The proposal in question could seriously skew the sound field.

[gullfo]

there is physical symmetry and acoustic symmetry. there may be some differences in the plan to compensate for some of the off center things like the window etc but i think you could only verify this by testing the space and making adjustments based on the measurements.