What Audio System have I got?

[omniflow]

Hi,

Trying to work out what Audio System is fitted to my E61 M5.

There are 4 speakers in the front doors, 2 in the rear doors, two in the roof, two under the front seats and one on the parcel shelf. As far as I can tell these are all real speakers and not just blank grills.

This makes me think it's Logic 7.

However, in the i-Drive system I can't seem to find the option to change the "room acoustics", which makes me think it's NOT Logic 7.

Any pointers appreciated.

Thanks