Logic 7 Retrofit


This was my first retrofit and what a difference in sound!


My car left Germany with the poor standard system, with 6 speakers and no amp. Logic 7 has 13 speakers, including 2 8" subwoofers, and a digital surround amplifier. This was the only way to go!


I found all the speakers and the amp on ebay, I made the wiring loom myself with OEM connectors. The MOST cables was ordered from Bmw.


This is a retrofit everybody can make, if they put some effort in it.

All the coding can be done by you.


Feel free to help me reach my fully loaded E61 :)

A little donation will make me very happy. Thanks

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