Thanks Bob, I am actually running Apex 40's for the front left and right and center, and Apex 10's for the rears. Your comments are still valid as none of the Apex speakers can be considered "large". The Klipsch is pretty fast, so the idea was to set the crossover for the small rear sub higher and run with both high level inputs (to supplement surround channel signals) and LFE inputs to help handle the lowest effects overall. Got this idea from a REL vender, but may scrap the approach based on input here. My receiver is an Arcam AVR 400, not even set up yet so I have some thinking to do about bass management from that end.
Thanks again,
kn