I know this is an old thread, but I am not familiar with the stock E85 6 speaker system setup and am concerned about adding an aftermarket HU like the OP did above. Are there any impedance miss matches I might run into with the stock BMW speakers and amp (I assume it has a separate amp I will be driving from the new HU?)
Crutchfield is now selling HU's with the wiring harness adapter and a steering control unit so that I can maintain my wheel volume and function settings. Has anyone used these and are there any problems?
If the BMW unit does not drive the speakers with it's own amp, is an aftermarket HU going to have enough power out to drive the stock speakers and are they 4 ohms or above so that there are no mismatch problems.
I'm not crazy about the look of an aftermarket HU, but it would be nice to have Bluetooth, and updated features, etc. Where would one mount the Bluetooth mic?
Thanks for any input and suggestions.
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