Suggestions for my room..

Hello..I'm Baran from Turkey..I'm recording guitars/bass and doing some mixing stuff like 2 years..Thru the past time, i've read and learned more about the principal things, and now i'm practising them.. Yet, i have some "bass" issue in my room..The area of approximately 100-140hz makes hell of a resonance and a "boomy" sound, and this causes the lack of bass frequencies of my mixes..Below, you'll find my room's pictures..Metric speaking, some dimensions are; - Length between 2 speakers and me = 75cm - Angle of the speakers to my head = ~30-35 degrees - Distance of my head to wall back of the speakers = 90cm - " " " near of the speakers= ~72 cm - Distance of my head/ears to floor = 120cm - Room Length = 340cm - Room Width = 255cm - Room Depth = 250cm And the pictures are; http://ressim.net/s/upload/2b7c307d.jpg http://ressim.net/s/upload/3493ba35.jpg http://ressim.net/s/upload/d7c8f252.jpg http://ressim.net/s/upload/cea64f29.jpg http://ressim.net/s/upload/eb294beb.jpg http://ressim.net/s/upload/3166d74a.jpg As you can see, i've used some acoustic foam behind and side of the speakers but tbh, that didnt solve my problem :) I've tried these speakers (3" Kurzweils, clone of Edifier R1000) in the middle of our sitting room and there they gave much better results than it gives on my room..As i wander around my room, i see the edges of the room are gathering the bass sounds, also my blue wardrobe, my workdesk and the shelves over the wall are vibrating/resonating a little when the volume is a little high.. I don't expect a fully professional treatment (can't afford such a thing as a student :)), i just want to get a balanced sound as much as i can..When i've considered buying a pair of Yamaha HS-50M or a M-Audio BX5A, I've been told that, using a bigger pair of speakers in such a room and placement, will not only solve this issue, but will worsen it.. Thats much of it..I can make a bird-view drawing of the room in paint as well, in case of any need :) I'm waiting for your answers, have a nice day..

you're going to need a lot more than some foam as the width and height are nearly square and your second axial modes are reinforcing each other. you are also in a corner which is increasing the effect of that corner. so... you want to position your desk centered on that wall or a wall. you want to add a cloud overhead made from 150mm of rigid insulation with a 19mm MDF backing hung down around 300mm from the ceiling on an angle. this will disrupt the floor ceiling mode and not take of space you need for the rest of your room. build a couple of 100mm thick rigid insulation covered with cloth absorbers for your left and right reflections. maybe on stands. make sure you speakers are not mid way on the wall but have the spot between their LF and HF driver set at 1.2m off the floor (or aimed at your ear). while the foam isn't good, take advantage of the foam to make it thicker in spots on the walls, doors, and ceiling behind you.

"you're going to need a lot more than some foam as the width and height are nearly square and your second axial modes are reinforcing each other.." I think i did not understand these exactly :/ And..what about the bass traps? In Turkey, i can easily find thick rock wool, can i use them as absorber? its kinda hard to change my current position, maybe i can turn my desk and speakers to my right wall and open space at my back..In both situations (now and at the right wall), do i need to isolate behind the speakers, where currently the foams stand? Also, its kinda hard to place an absorber to my current left side, as the closest thing to my position is my wardrobe..

square rooms reinforce room frequency response which means that peaks and nulls will increased more than uneven ratios. to overcome this, bass traps in the corners etc plus you might build a hard backed cloud over the mix position can help. while it might be hard to change positions (on the wall currently or elsewhere) you have to decide how important your mixing is... being close to a corner it going to make it much harder so finding a wall in your room to put your desk so you have some symmetry left to right and then treat the wall behind you as well as first reflection points.