gotta love the PB2+ but i am having serious problems with room nodes. My old sub was a 20-39CS with samson S-700 and it was placed in the front corner near the left main speaker and this yielded optimum bass response. The PB2+ is so big that i am limited to placement in my small/medium room. Layout is shown below. Placing the new sub in the rear corners present severe room nulls at around 30hz, 65hz and again at 80hz. No equalisation will fix this. My favorite demo dvds have little/no bass at these frequencies so my old 20-39CS performed much better in my room. I am limited to placement with the new sub. I used ETF-5 and confirmed my listening tests and the rear corners are out of the question in terms of placement although ideally this would have been my preference. Putting the PB2+ where the 20-39 was before it is not an option. there are only so many places i can put this sub! Maybe somewhere along the side walls so there is sufficient space to walk by but i am running out of options. I my case bigger is not better thus far. Any advice to help my untangle my problem would be appreciated. Where are all the bass heads out there?