Customer with a reasonable budget needed me to solve the audio and tech issues he had on his lovely Z4, with 3 way front doors and component rears the first thing that jumped to mind was a Focal K2 system as these sound great, nice SQ Focal amp to drive it and small 8" ported sub in the rear to help with the lows, topped of with Apple Carplay and Android Auto to bring it into this century, quite an easy job with great output, only downside is no DSP to get the best of the speakers but that can always be added later, hope you enjoy!

http://creativecarsounds.co.uk/

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