A:AnswerI have mine sideways on the floor under my bed without any issues. It's not very big but was too tall to fit normally. It's about 1 foot tall, 6 inches wide, and 10 inches deep.
A:AnswerTry this:
On the remote, there is a button called surround.
After pressing it, you can turn the surround speakers on or off.
Also you can control the volume of the rear speakers by pushing the button near the top left of the remote. It's part of the setting that control the the bass and treble.