I received my first complaint a few weeks ago while watching star trek into darkness at near 0dBs on the receiver.
Not planning on moving for another year, so I'm making
the best of it. Luckily, the material used was all free from work, even the screws!
The wall it sits against is concrete, so I really don't want to drill into it, neither do the owners. Had to think up some kind of method on the fly, other than hanging a panel. For the moment, this is my first attempt. I used R13 fiberglass and some very thin breathable fabric. The complainer is on the opposite side of the room, so I'm hoping this will lesson the echos and reflections. So far it has elevated the sound quality on the couch a noticeable amount, even to the wife. Its a crawler underneath, so stopping bass from getting to his floor seems like a feat fraught with peril.
The filth under couches these days!
Still need to tighten the fabric up and smooth the insulation behind it. Cant beat free though.