SETTING UP A SURROUND SOUND AUDIO SYSTEM FOR YOUR CAR

A few days ago I was listening to XM Radio on the "80's on 8" station and the announcer stated from world Earth. I chuckled because what he was really stating is that all radio stations provide you a call sign and then they say, what city they are from, however XM radio is a terrestrial satellite radio station and it beams at signal down to whoever