The trick to setting up the REL is to get a copy of the "Sneakers" soundtrack and follow the set up guide on either the rel.net or sumikoaudio.net website. The idea with the Rel is to have it play the region below your main speakers (mandatory large setting) with no or very little overlap. The overlap is very noticable and will muddy or obscure the bass lines. As low as the 10Ts go, something between A1 and A3 (mid 20s) should be close. (It's going to depend on how your 10Ts are interfacing with the room as well as how the Rel interfaces with the room.) You then have a choice for the line input to use that same xover point or no crossover (LFE input) and let your processor control the xoverpoint. Hopefully, your processor will give you an adjustable crossoverpoint (something in the 40 to 60hz range) as higher frequencies than this sent to the REL sometimes don't let the Rel's strengths show thru. Try it both ways and see what you prefer. Good luck. I like the Strata. AudioWill.