awesome man!!! great work!!

i have two options which i want to experiment with...

I have a set of Mb quart dkg 110 speakers and a set of Polk Audio db401 speakers...

not looking to upgrade the amp at this time... and i'm not looking to install larger diameter speakers that require cutting of the door frame..

a simple speaker upgrade using the stock sound system should be more than enough..

i'll let you know how it sounds...

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2012 X5 50i M-Sport
2014 X3 35i M-Sport