Thanks for all the kind comments!
I took off the casters. If you look closely at the pic from the seating position, you'll notice that the casters were temporarily installed into the cones that accept the spikes. This made the speakers sit much higher than they normally would. Thinking that this would throw off the propogation chart, I removed the castes and put in the spikes - but I have them sitting on Herbies Hush Puckies (basically sliders made to go under spikes).
Holy deep bass, batman! I had turned off the subs while I tried to play with positioning and thought they were on! I need to start over in terms of placement which I hope to do today.
Lloyd, my RELs are hooked up to the Doshi amps (as opposed to a separate IC from the preamp). They take the signal (and character) from the amp but do not add any load.
It has crossed my mind that the speakers might not be fully broken in; I'll have to ask my dealer.