4m x 5m x 2.5m room - modal resonance problem

[Glenn Kuras]

Originally Posted by notomorrow

Hey guys,

this is what I'll do:

First of all, I'll move the bookshelves against the right wall, parallel to the window.
Next, I'll put 4 mineral fiber panels (10cm thick) on the front wall + 2 of them on the upper corners + 2 additional foam pieces on the side walls, basically taking care of the front of the room.

I'll take some measurements afterwards too see what am I dealing with and eventually I'll treat the rear of the room accordingly, with specifically designed panels and bass traps.

Is that good?

That is a good start but plan on a lot of panels in corners, which can be done over time.

[notomorrow]

tnx glenn,

im guessing you're talking about the rear end of the room corners?
I guess I will end up covering those corners completely, from floor to ceiling

I'll be back with the progress I make.

tnx all
peace!

[CRASHBOX]

This is an old thread, but I understood all three way corners to be the most problematic, followed next by all the two way corners, therefore dictating the most effective priority of placement for bass trapping to best treat a room. That principle supports Glenn's ceiling soffit and all corners approach.

Sounds like you've researched recommended speaker/listener positioning in a room, and probably know about treating first reflection points on the side walls(and don't forget a sound 'cloud overhead). Be sure to first measure your naked room for comparison, to keep all improvements honest.

So how did it turn out, and what did you learn? I learned to build my own bass trapping and try to lean on common sense wherever possible :-)

[kasmira]

Originally Posted by CRASHBOX

This is an old thread, but I understood all three way corners to be the most problematic, followed next by all the two way corners, therefore dictating the most effective priority of placement for bass trapping to best treat a room. That principle supports Glenn's ceiling soffit and all corners approach.

Not necessarily, however, this is pretty standard in most rooms. The reasons why is because, to put it simply, sound is 'forced' into corners and has a hard time trying to escape. Also, you can dampen all three axial modes from the tri-corners, so its also a go to spot. For the most part, you can do great damage in the corners, but it is not truly correct that corners are problematic.