Step one: locate pre-wired speaker location and cut a 16"x12" hole centered on trusses.
Step two: install one Stealth Acoustics LR6g 2-way invisible speaker. This panel features and 6.5" low frequency driver and a 1" high frequency driver.
Step three: play your SONOS CONNECT:AMP or any other source and test that it works.
Step four: Tape and mud seams like a standard drywall patch.
Step five: Sand and paint. You now have high quality sound without any visible clutter.
Step six: Do the same in your dining room. Replacing those common round in-ceiling speakers with invisible speakers.
And your family room. Fill your home with clear, high quality sound with zero visible equipment.