Thanks GM for all the fine pointers. I looked at the N1200-8A on GPA website. That will be my best option if I am going run the A7 straight but I also was considering going to run biamp. How do most people run biamp? Do they run a separate amp directly to the woofer as is or are there 2 way XO unit that is build for biamp option where the LF side and the HF of the XO unit can be split with the selection of the binding post.