I realize this post is several years old, but I found it by good ol' Google. I thought it was quite helpful. Thank you guys! Another question on a related topic: Is there any advantage in having 2 subs, 1 connected line level to handle the lower frequencies of the L/R fronts plus 1 other sub connected as an LFE? I bought Mission speakers (including EAS1 (10")and EAS2 (12") subs) a number of years ago from an AV store in Chicago and have had my system configured in this 5.2 way using a Denon AVR-4308 receiver. From the get-go I had constant problems with the two subs and have had each repaired a couple times; given my listening volumes I highly doubt they were over-driven. In any case, I want to upgrade and am considering a Velodyne DD-15+. Do I really need a second sub run line-level, or will a single sub run as LFE work just fine with crossover set on my AVR to 80Hz? Any feedback is appreciated!