Audio Systems: bmw and bose, infiniti q45, voltage levels

Question
I have a 1987 325 is  I want to change the speakers to
bose speakers from infiniti q45 1993 is it possible ?

Answer
Don't know why.

You would have to move the entire electronic system as bose are not interchangeable products.  They are usually individually powered by separate amps, often mounted right in the speaker basket. I think they are in the Infiniti Q45, but I am not sure.  Then, the preamp drivers are noncorming voltage levels as well.

It would really be an easier task to start with a new set of compatible speakers and amps for the 325i.   Unless you are an advanced technologist I would not recommend you transfer the bose over to the beemer.

Hope this helps.
Cleggsan