EM2000,

I don't think SX250 is a powered speaker. The SXA250 is, and as UD says it is made of wood so it is heavier.

Scott, it appears from the specs that the 360 compromise on frequency response. The 60 Hz at -10 db is quite a weak bottom end (the high end also suffers a bit). It would seem that for a good bass response one would need to use a subwoofer with the 360s.

Regards,
Alex