The dr250 works biamp with Crown xls 1500 at 2 ohm for the drivers high and the xls 2000 at 2 ohm for the mid driver.
Speaker management is the DBX pa driverack.
This is the best sound system



http://www.youtube.com/watch?v=sU4A8Ygd ... re=mh_lolz
http://www.youtube.com/watch?v=xNcY4g2sAY8