Room set up, and Crossover & Subwoofer concerns...

G

Gatsby191

Audioholic
My new home theater was framed out and set up in my basement. The seperate room is 10 X 20 and the room is basically air tight. No windows, 2 solid core doors (1 1/2 inches thick each), and each door has a 3/4 inch door of MDF glued and screwed to it, with a layer of green glue sandwiched in between. (these doors weigh like 200 pounds each, and the whole house shakes upstairs when someone even slams one of these doors the slightest bit!) Anyway, the ceiling is only 6 feet 9 inches fom the floor, and is constructed of 2, 1/2 inch pieces of sheetrock screwed together with a layer of green glue in between. All of the walls are basically the same as the ceiling. There are 6 recessed light cans installed in the ceiling. (short cans because of height resrtictions) The floor is brand new wall to wall carpet and its decently thick with a layer of foam underneath it, and it all sits on top of a concrete slab. My sub sits in the rear left corner of the room, and the bass seems pretty good overall, but something tells me it could be better and a bit "Tighter". Do I need BASS TRAPS? (Room is only 10 X 20) Also, the sub must stay where it is. Putting it up front would cause way too much traffic up there, and really throw off everything. I know that sounds a bit ridiculous, but it's true. Now the issue of the X overs. My Onkyo TX SR875 lets me set each speakers Xover individually. I have Tannoy Sensys DC 2's as my front L & R's with crossover set to 80 and the front center is a Tannoy Arena highline 500C set at 90. The L & R side surrounds are Tannoy Arena Sattelites set to 90, and the rear L & R's are Tannoy Arena Highline 500 Sattelites set to 90. I use an Aperion Audio Intimus S-12 with it's output set to about half (way too much). I have the individual crossover setting on the back of the sub set to it's max and the phase is set to -o-. I think I missed something in my set up. Any suggestions? Also, can I, or should I set the db levels on the side surrounds to something that will make them a little more noticeable to hear? Right now, it's as if they are for aesthetics only' Have to get right up on them to hear something. I'm confused. (Hell, I spent $700 for 2 very nice looking pieces of art that LOOK like very good speakers too...) The rears are a bit faint too, but I expected that, right?
Any help?? Thanks! Joe B.
 
gullfo

gullfo

Enthusiast
since the room is so tightly constructed, you're actually keeping bass in the room. so yea, bass trapping is a necessity. put trapping in the corners of the room as room modes terminate there and thus are optimal. wall-floor and wall-ceiling are also corners if you need layout options. tri-cormers are best for trapping. also, having some wall and ceiling absorption (not too much as its easy to overdo) will also help get the room balanced. once the room is under control, look to the speaker settings and EQ to finish it off.
 
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