I have recently moved the pc20-39+ to a small (11'x12') dedicated room. I have the sub located in the front right corner. I currently have the sub tuned to 12Hz due to the room being so small, which gives me extra extension over less output which does not seem to be needed in this room. I was wondering if anyone else has played around with the variable tuning. If so, do you get any benefits in sound such as a more musical sub (almost sealed) or does it just give you the extra extension?