Absorber Panel directly behind speakers ?

ScumBum · 28th September 2010

Should there be an absorber panel directly behind my speakers where I mix , placed on the wall ? I'm pretty close to the wall .

I was looking around at pics on the net and I saw an absorber panel placed above the speakers on the wall and leaving the area right behind the speakers open .

Are the reflections on the front wall not bad because they're hitting my ears the same time as the speakers ?

AnthonyRochester · 28th September 2010

(I am not a pro but) I think it depends on your room. High frequencies from your speakers will be quite directional, so you won't get significant first reflections from that wall, only after reflecting off other walls first. The time delay and strength of those reflections depends on the size of your room and amount of absorption in the rest of the room. You don't want this reflected sound to be too loud or too close in time to the direct path sound. Its probably not going to be a problem. Side walls and ceiling are more important for absorption for this purpose.
Bass frequencies are a lot less directional, and probably the easiest way to tame low frequency issues is with bass traps in the corners of your room.
So in short, I don't think absorption on that front wall would make a big difference.
Unless you are recording in the same room and want a deader sound..

Glenn Kuras · 28th September 2010

Maybe, maybe not. See the following article to understand SBIR.
Learn what is SBIR (Speaker Boundary Interface Response).

ScumBum · 28th September 2010

Quote:

Originally Posted by Glenn Kuras

Maybe, maybe not. See the following article to understand SBIR.
Learn what is SBIR (Speaker Boundary Interface Response).

Thanks .

Ethan Winer · 28th September 2010

Quote:

Originally Posted by ScumBum

Are the reflections on the front wall not bad because they're hitting my ears the same time as the speakers ?

This should help:

Front Wall Absorption

--Ethan

________________
The Acoustic Treatment Experts

ScumBum · 28th September 2010

Quote:

Originally Posted by Ethan Winer

This should help:

Front Wall Absorption

--Ethan

________________
The Acoustic Treatment Experts

Interesting . Thanks for the read .

28th September 2010	#1
ScumBum Lives for gear Joined: Jan 2006 Location: San Fransisco , BayArea Posts: 2,139 Thread Starter	Absorber Panel directly behind speakers ? Should there be an absorber panel directly behind my speakers where I mix , placed on the wall ? I'm pretty close to the wall . I was looking around at pics on the net and I saw an absorber panel placed above the speakers on the wall and leaving the area right behind the speakers open . Are the reflections on the front wall not bad because they're hitting my ears the same time as the speakers ?

28th September 2010	#3
Glenn Kuras Gear Guru Joined: Jul 2005 Location: Atlanta, GA Posts: 11,994	Maybe, maybe not. See the following article to understand SBIR. Learn what is SBIR (Speaker Boundary Interface Response). __________________ Glenn Kuras GIK Acoustics USA GIK Acoustics Europe 770 986 2789 (USA) +44 (0) 20 7558 8976 (UK) See the NEW Scopus Tuned Trap

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28th September 2010	#2
AnthonyRochester Lives for gear Joined: Jun 2007 Location: somewhere in Tasmania Posts: 1,262	(I am not a pro but) I think it depends on your room. High frequencies from your speakers will be quite directional, so you won't get significant first reflections from that wall, only after reflecting off other walls first. The time delay and strength of those reflections depends on the size of your room and amount of absorption in the rest of the room. You don't want this reflected sound to be too loud or too close in time to the direct path sound. Its probably not going to be a problem. Side walls and ceiling are more important for absorption for this purpose. Bass frequencies are a lot less directional, and probably the easiest way to tame low frequency issues is with bass traps in the corners of your room. So in short, I don't think absorption on that front wall would make a big difference. Unless you are recording in the same room and want a deader sound..