Small room bass treatment - beyond superchunks

I have a small control room 10x12x8' high. I have superchunks in the vertical wall corners, and I still have significant bass problems in the room. I will installing Supershunks in two of the vertical wall/ceiling corners. Assuming I've got superchunks in all vertical corners and horizontal wall/ceiling corners... I am toying with a few other ideas. 1.) Vents near floor and ceiling in corners. I have seen a few posts about opening a vent at the top and bottom of filled corners to allow additional bass absortion. I have a garage on the front wall. Why not open up a register sized (4" x 10") hole in the wall between the mix room and the garage in the corners near the top and bottom of the wall? These holes could actually be behind the superchunks. Would this benefit me by allowing pressure to escape into the garage? If it might help, any speculation on how much? I don't want to do it if it's not going to help much. 1b) using an open door as a trap I also thought leaving the door in the back corner open would essentially act as a bass trap. I would open it for mixing, and place a 2x6foot 4inch thick standing panel in the doorway. I can test the impact of this myself using my trusty rat shack sound meter (I'll do this tonight). But in the meantime, anyone have thoughts on this? 2.) Ethan Winer's Deep and high bass panel absorbers on the floor/wall corners Space is at a premium, and it would be near impossible to put superchunks on the floor/wall vertical corners, but how about mounting Ethan's panel absorbers horizontally on the walls here? How much would it help if at all? So, the old 80/20 rule... The superchunks were easy. Punching holes in walls and mounting panel absorbers is gonna be real work, but I'll do it IF it makes a material difference. I mean - with the superchunks, if I'm 80% of the way to all I can expect from my room, doing these other things is probably not worth the effort to me. I sure would appreciate your thoughts on this. THANKS!

Do you have specific frequencies that are causing the problej? Modally, looks like 141, 220 and 282 hZ might be a bit strong. If you keep speakers/head away from vertical center as well as away from 4 and 8 foot of the long dimension, it should help some (even 6" to a foot will make a diff) What (if any) test gear/software do you have? Steve

OK - problem solved! See this thread: http://www.johnlsayers.com/phpBB2/viewtopic.php?t=5895