[Alex.J]

Hello Gents,

Basically a few audio related questions that have searched and not found the answer i am after or it isnt in audio idiot terms.

Basically, i have a proffesional headunit with bluetooth(no USB) in a pre lci 2007 e91 msport. I believe that has 6 speakers in total, 1 in each door and 1 sub under each seat.

Now i want a better sound, as it is ok, but not exactly crisp.

I am after, keeping the standard HU and upgrading all 6 speakers(and the addition of tweeters) to make a crisp sound.

Questions:
1. Do i need to code my headunit to HIFI? (can it be done)??How much?
2. Can i add new front speakers on there own to an otherwise standard system?
3. If not, can i add front speakers and an amp and not upgrade the rears or sub?
4. On fitting the speakers, do i need any special mounts or backing pieces?
5. Any advice i might need being a total idiot?

Thanks in advance

Thank you