I had a nice system in my Z that I kept. I installed my APPRADIO3 and it sounded so good I sold the amps (finally) I still have my 10" Digital Designs woofer and might if I can get a box use it but for now I found I am content with the stock DSP speakers,sub & amps.

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BMWCCA # 480346

'72 e6Tii rip
'90 e30iC sold