Quote:
| jmprader wrote:
Gentlemen:
I dropped off a dozen 2" x 2' x4' c703 rigid fiberglass panels and some "transparent" fabric at my favorite craftsman's upholstery shop today. He's going to make frames to avoid crushing the fiberglass and to facilitate affixing and stretching the fabric. I'm planning on 6-8 panels for the sidewalls and ceiling for "first reflection" points. The others will probably "front" my corner traps with acoustical cotton behind.
We have good readings on our dual sub FR without treatment and know our room is prone to slap echo. If we can tame the echo and clean up the waterfall plots on the bottom octave with the wall/ceiling treatments and corner traps, I think room eq wizard and my bfq2496 will help me take care of the rest. My hard goal is +/- 3db from 15-100hz, then killing any midbass nodes and reducing the reflective hash that reduces coherent spatial cues.
I've got a decent idea where I'm headed with this, but would appreciate any hints from others.
BTW: JCD, Roll on you Bears. Cal '79, living a bit south of the Bay Area but still a hoops season tix holder... |
Seems to me that you've got a pretty good handle on what to do.
Here are a couple of pictures of the first reflections you might want to look for:
Other than that, I have these:
1) Use the mirror trick above to place your panels
2) If possible, have a 1"-2" gap between your panel and the wall
3) The rule of thumb I've heard regarding treatments is that you don't want to treat more than about 35% of the surfaces
4) Try and diffuse sound at the back of the room
JCD
Oh, Class of '89.. Go Bears!