Help with room sound

[dholmes]

I recently made a ht out of my garage. Its 12x22 ft, the sound is good but I have a lot of standing waves, & the surrounds could sound better. I have polk spks fxi500 for sides& rears. The room is paneled with carpet with heavey padding. Would home made bass trapps made with rolled carpet help? Also does anyone use diffusers on the rear wall? Help!! thanks

[mantis]

Lots to talk about here.

Rolling rugs will help some but maybe cause problems.

diffusers are excellent for between the surround back and from the half way mark and back.

General rule .......dead the front half of the room and live in up the rear half.
Balance is key here.

[Steve@3dai]

What kind of material is the floor, that's a big wall, just sideways ;)

[dholmes]

The floor is concrete with good padding & carpet. thanks

[Tour2ma]

Bass is a tough hombre' to tame. Carpet... no. Padding... no.

There's a very good chance all you are doing is killing those fxi500's with all the padding.

How many sources of deep (< 120 Hz) bass are you running?

[dholmes]

I have a acoustic research 15in 500watt amp as bass source. What makes a good diffuser for sound control? thanks everyone for your help

[Tour2ma]

All other speakers set to small?