Targeting 20~30hz treatment possible?

[MalVeauX]

Hi all,

I'm currently trying to see if I can target some low frequency bandwidth.

I don't care about things under 20hz, where I can't hear it anyways. But I am curious if it's possible to try to treat the 20~30hz range here. This is a rectangle room, one sub is on the side wall in the middle (takes care of harmonic first order stuff like a champ). The front two subs are not fully corner loaded but they are near corners and pulled out from the wall behind them. I could potentially put some tall treatment stacks behind these front two subs and stuff the corners maybe. The question is... with what, and from the floor to the roof, or any other idea, like rockwool blocks stacked up, or a frame of it, or another material?

Very best,

 

[planet10]

Since passive absorbers require space proportional to wavelength you want ot absorb. ame with dipersion/diffraction based treatment.

Probably the easiest way todeal with LF modes is actively — use 4+ subwoofers.

dave

 

[Charles Darwin]

I agree with Dave.
Passively it is almost impossible unless you have a huge room and prepared to fill most of the space with bass traps.

 

[MalVeauX]

Ok, figured it was going to be that direction, but wanted to ask to confirm. So rockwool is out of the question and won't help at all then.

Actively, I would have to run more subs in reverse phase, right?

Very best,