Lots of great information here. I got a couple of recommendations here from members here and here is what I did.
I thought the weakest link was the lack of bass. So I got the bavsound underseat subs.
https://www.bavsound.com/Product/bsd...rade-pair-2ohm
That lasted for a while and then saw @AleksanderSuave great writeups so ordered the rears
https://www.ebay.com/itm/BMW-2-Serie...72.m2749.l2649
I had also ordered the front ones
https://www.ebay.com/itm/for-BMW-1-F...72.m2749.l2649
So at this point I am very satisfied with the system. I would Love to have a tunable amp but for now I will leave things alone...
Oh I did go back and read
AleksanderSuave report on the center so ordered that....
