Hi... I've got a question about subwoofer placement that i haven't seen answered in the various guides. Basically my preferred position for my subwoofer is in a corner behind the tv.. ok so far. However, next to the TV and right in front of where I'll put the sub is a stack of 2 bean bags and some cushions blocking it off from the rest of the room. Is this a problem? Will it muffle or block the sound in any way? Need to know in advance in case a should consider a longer cable.