Hi paullee01,
To answer your question I have run it both bi-amped and full range. I have several other speaker and amp & power amp preamp combinations. I also have 4 original ALEMBIC 15' cabinets loaded with K 140's and an old SVT 8/10 and a PAS EV loaded 2/10 and other cabinets and Amps . Two of the other power amps that I like (I like them alot !) are a pair of Yamaha P-2200's. I use a variety of Active crossovers and Parametric EQ's to emphasise different frequencies in different settings. I have serious equipment GAS so I am always experimenting on new approaches and sounds with new and different gear. I have been experimenting with TRI- AMPED configurations lately.Every room has different curves so I like to explore different angles ! One of the things that I am always trying to avoid are problems with standing waves and phase cancelation . I have to be careful with 18's in that regard .