I totally panicked my wife one day when I took every cushion off the couch and used them to build bass traps with every pillow, cushion and woogy blanket I could find thrown in behind them.

It seemed to make a difference with the problem I have in my square room where the back corners get loud, boomy bass if I turn the SW up enough to get decent bass in my center listening position.

Never went further than the experiment though.

With great power comes Awesome irresponsibility.