[audiowreck]

So I've built my tiny project studio. It basically ended up as a small room that could be a walkin closet off of a basment bedroom. My kids have taken over my big room for there toys :( So after building it and putting all the gear in place and doing some listening I've discovered I have some acoustic problems. When I'm at my mix position I get a cancellation in the low end (I know general term). It's like a comb filtering effect. When I move to the back of the room the low end is there. I've put up a few auralex foam panels to cut the early reflections from the side walls. Do I need some kind of bass traps? I was thinking I could put one on the door. Am I getting cancellation because the bass frequencies are clashing at my mix position. I've including a terrible drawing of the dimensions of the room. Thanks for all your help. Cheers.