For my 2009 R55 with HIFI stereo
(10 speaker option before they came
out with the Harman Kardon version).
Thinking of getting their speaker
upgrade kit which includes new
4” door midranges and new a pillar
tweeters. Easy plug and play.
Anyone tried these?
Is the sensitivity at least as high as
the oem drivers?
Also thinking of replacing the lower
door woofers with Polk MM6502
ones to improve the bass. Not
considering a subwoofer.
Will leave the rear speakers the
same - don’t think it’s worthwhile
to change them.
Any thoughts? Keeping the stock
head unit and amp.

 

I have the BAVsound upgrade and while it's not an expensive kit I would not say it was particularly worth it either. It does sound better but not to the level that i think a lot of people are expecting. I had very specific midrange upgrade desires (treble and bass rattle in midrange) and because it's much better damped it does solve that so I'm happy

 

I bought this kit for the Harmon Kardon at Christmas, have not installed yet