This page is interesting and may be informative:
DBR, DXR and DSR Series Powered Speaker Comparison.
http://faq.yamaha.com/us/en/article/live_sound/speakers/active_speakers/dxr/10274/8361
DBR, DXR and DSR Series Powered Speaker Comparison.
http://faq.yamaha.com/us/en/article/live_sound/speakers/active_speakers/dxr/10274/8361