I have owned AV Duo 2.2 I have since built many front horns. The imperial style bass cabinets are far better than even AV new bass horns.I have heard and owned many of the high quality subs on the market inc REL ,Martin Logan Velodyne,JM labs Thiel many others built many diferant bass cabinets and bass horns.Theres nothing even close to a modern style imperial.You could sell your 225s And DIY or have someone build a pair for you see Decware imperial forum for more info. http://steinman.mesls.org/Stereo/J%20Kalinoski%20Loudspeakers%20101.jpg
