I just recently bought the NSP1 speaker package. I was planning on buying a Sony sub and Denon 1802 finish off my HT. However the 1802 Xover is set for 80hz. By looking at the performance chart, 100hz looks to better suited for the NSP1. Decibels decrease sharply at 100hz. Will this be a big factor? Should I get another receiver w/ adjustable Xover?