Simple door speaker replacement?

[el_duderino]

Here's the kink:

The front has 6" woofers, 2" mids (in the dash) and 1" tweeters (in the mirror sail).

The back only has woofers and mids.

The BW amp has dediated channels for each speaker, and only sends each speaker a dedicated range of notes that that speaker is supposed to play.

NO ONE makes a 2" midrange replacement speaker at this time that will play the notes that BMW has assigned to the 2" speaker. Most evveryone makes 2-way woofer-tweeter kits, and if you used one of those the midrange gets left out.

Midrange is the most important part of the sound.

Bavarian Soundwerks has a tweeter-woofer replacement kit that uses the factory mids, and I don't like that approach either. The factory mid isn't very good either.

In my experience the best option is just to replace the BMW amp with a small (40x4 or 50x4) aftermarket amp and then you can get really good speakers.

I would suggest a DLS CA41 50x4 and avincar 6.5/tweeter components in front and 6.5 coaxials in the rear (which have been well reviewed here). That's about $700 in parts.