Help understanding room test results

Hi everybody, trying to tweak out my room (as in the chapter on room treatments in Rod's book). I've taken some measurements, and what I get seems always to look similar to this (unless I turn on the sub) Fig 1 is 4 measurements averaged. Fig 2 is the same thing viewed as a waterfall plot. To be honest I've read the chapter quite a few times but am using FuzzMeasure instead of the recommended software, and don't really understand what I'm doing. I am using ADAM P11 A's which are supposed to be flat to 40Hz, and an ECM8000 microphone. ROOM DIMENSIONS 14.5 ft wide 17.5 ft long 11 ft tall Inner leaf is 3/4" Sheetrock and 1/2" Homosote. Front wall has a 3' x 8' double 1/4" window angled downward on the inside. Floor is short carpet with Oak in the middle. EXISTING TREATMENT Front corners 2' wide superchunks 11' high Back corners 3' wide 11' tall 4" thick Rockwool panels front wall ceiling corner and back wall ceiling corner 6' x 2' 8' x 2' 4" thick rockwool side walls and ceiling corners 10' x 2' 2" thick rockwool Ceiling 2 4'x8' ceiling clouds 4" thick rockwool 2 pieces of 2x2 auralex panels to snag the early reflections on the back and side walls. I feel like there is a big problem at 100Hz and another big one at 140ish, but I don't really know? Do these look like they're supposed to? Should I put more broadband treatment in there or try to do some kind of narrower treatment? Here's my original post with more info if anyone needs it. http://www.johnlsayers.com/phpBB2/viewt ... ght=#69290

Sorry to bump this, but I figured I've made a good wait of it, and still need the same advice. The same question stands: Are my test results acceptable, How do I improve the room for mixing? I'm hoping to put in less than $300. Some updates are: I replaced the auralex sonoflat panels on the left and right of the speakers with 2x4' 4" Rockwool. Other than the corner traps there is no treatment on the back and front walls. The room sounds pretty dead, but there is a slight flutter echo. Should I put up some of those plastic auralex diffusers? Thanks, Chris

That looks pretty good, but more bass trapping can only help. The front and rear walls especially will benefit from thick absorbers placed flat on those surfaces. If you space the absorbers off the wall, they'll work even better.

chrissss wrote:

there is a slight flutter echo. Should I put up some of those plastic auralex diffusers?

You'll probably find my recent video about diffusors useful. See this: http://www.johnlsayers.com/phpBB2/viewtopic.php?t=11089 --Ethan

Thanks a lot Ethan! It is really great to have someone like you respond! I'm psyched that you thought the room response looks good. I think I'll start with 3 thick absorbers on the back wall, and one on the front (above the window), then later try to get two diffusers on the back wall, unless you think that 1 foot is too close to the couch (even for the qrd's). -Chris

chrissss wrote:

then later try to get two diffusers on the back wall, unless you think that 1 foot is too close to the couch (even for the qrd's).

One foot is too close, but it's still better than a bare wall. And even if guests in the rear are too close, you won't be too close. And you're the one who really matters. Who cares about the bass player's girlfriend? :) --Ethan

hahaha, no kidding!