Loudspeaker system BMW business

[TIMSTURLA]

Hi,

I've found a used M3 that just about has the spec I'm after.

Just one question, what is the difference between business and professional loudspeakers and is it possible for the car to have professional nav and business speakers, or do the 2 always come together?

That's 3 questions!

Thanks,

Tim

[Mr Moley]

http://pistonheads.co.uk/gassing/topic.asp?h=0&amp...

Bit of info for you here. I've had the business system in both my BMW's and find it pretty good - I haven't heard the top two systems though so maybe ignorance is bliss!

[craigjm]

Nav and the speakers are independent of each other so you can have one that is professional and one that is business.

[TIMSTURLA]

Thanks for your help!