DSP has a different amp, a dual subs in the trunk and an additional menu on the monitor to adjust sound settings ..
I beleive the other 10 speakers are different than the non-DSP, but I am not sure.

More info here http://www.xoutpost.com/articles/x5/s...ve-dsp-x5.html

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BMW 1M 2012 - Current
Jeep Grand Cherokee Limited 2011 - Current
BMW E93 330i Convertible 2009 - Sold
BMW E46 320i 2004 - Sold
BMW X5 4.4i 2002 - Sold
VW Golf GTI 2000 - Sold
BMW 740i 1996 - Sold