Hi Klugger,
It depends on how well the DSP is implemented. If it's an Axiom DSP sub (EP400, 500, 600), music is excellent and so are movie low-frequency effects.
It may be just you or your room or the subwoofer placement if you changed it at all. However, if it's another brand of DSP subwoofer, it could be less-than-ideal implementation of a DSP algorithm.
In double-blind listening tests I've conducted with Axiom's DSP subs and subs from other manufacturers, the Axioms are more linear and consistent as the deep bass frequencies get deeper. I've never detected any difference in "musicality" of our DSP subs and non-DSP subs, unless you count deeper smoother bass from the DSP subs as being more musical.
Regards,
Alan
