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Absorption behind components and speakers rationale?

I get that absorption panels are used to absorb the first reflection and limit reverberations is a good idea.  And a rug and maybe some additional panels help absorb Rogue Sonic waves.

But what's the rationale for including absorption panels behind the system.  I have a window door behind my system and maybe this is impacting things in a negative way.

Just looking for a simple easy to understand rationale because not very smart.

emergingsoul
immatthewj
1,894 posts
 

It appears as if those Bubos acoustical panels from Amazon are only 0.4 " thick.

emergingsoul OP
1,125 posts
 

@immatthewj

I know, so I may need to double them up.  I may need to find different ones without the full back adhesive which I found on others. 

 

 

dentdog's avatar
dentdog
498 posts
 

Absorption behind speakers can reduce bass cancellation. As you move the speakers out into the room a different bass frequency is affected. The bass traps reduce this cancellation.

mikhailark
246 posts
 

Behind speakers is usually to clean bass reflections. But this means panels must be THICK (2" and up) and/or use cylindrical traps in corners

emergingsoul OP
1,125 posts
 

That's curious about cylindrical traps. Is there much of a difference between cylindrical and the triangle panels that fit snuggling into the corner?

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