Seeing if there is any interest here. I have 4 BMW Individual Sound System door speakers for an e90 along with speaker covers.
PM me if interested.
From BMW website:
"As in music, true mastery is also required to achieve a first-class listening experience for the interior of a vehicle. The BMW Individual High End Audio System is able to fulfil this exacting demand perfectly. Signal processing is precisely tuned to the three-dimensional space, and DIRAC technology together with speed-dependent equalising reduces unwanted ambient noise to a minimum."