There are 3 systems.The Business one has 6 speakers,you can tell by seeing if you have cubby holes behind the seats.If yes, you have 6 speakers.If you have speakers there,you have one of the 10 speaker systems.The 6 speaker system has the main speakers in the footwell, with tweeters by the mirrors and mids behind your head in the rear panel.There are dummy grilles in the door but no speakers.I've upgraded mine with new bass units in the footwell, new tweeters and mids in the doors where there were none with an amp in the boot.I've left the rear mids in place as I ran out of cash. It now sounds fab.