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Originally Posted by TQ2K
I have Rainbow speakers thru BSW and they are definetly way better than stock or DSP systems.... The sound is brighter so an upgraded sub is a definite must.
No idea if the rainbow components for the e39 5 will fit the X5.
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I really like to upgrade to rainbow but I don't know where to get them and get them installed. Did you use the car specific rainbow? What series do you have?
