Surround sound question
I'm finishing my basement and would like to add surround sound speakers. I have 2 columns in the back of the room that are wrapped in drywall, and will eventually have wood over them. They are situated perfectly for rear channel speakers. I'm on a budget and was considering purchasing used bose cubes. I optionally could do in wall speakers.
Any suggestions on in wall vs external mount? Any speaker recommendations? Also, are there any guidelines on mounting height?