Question for those who use REL subs with Wilson speakers

Hi golfnutz, thanks for the questions and suggestions. I have not tried stacking the subs.  My room is a boy 15x 20. However there are 2 doorway sized openings in the corners of the right side and one on the left wall about 3/4 of the way toward the wall behind listening seat. I use Stillpoints Apertures. Concrete floor with carpet and pad. Using Musical Fidelity Nuvista 800 amp, connecting RELs via Bassline Blue cables to amp speaker binding posts as recommended by REL. I consulted extensively with their customer support techs during setup and tuning.

Thanks millercarbon. Brief and to the point!

Great suggestions, and thanks!

Golfnutz, thanks for your comments. Regarding the compatibility of the 800 with the Sashas, a couple of points: 1. I have spoken with people at Wilson Audio, who told me that they have had the 800 at their facility and that it works well with their speakers—they like it; 2.the 800 was favorably reviewed in HiFi News with Alexias, which dip to 2 ohms at 80 Hz. Also, my own listening experience with the combination confirms that it works very nicely. I do have a KW 500 as well as a pair of Adcom monoblocks on hand, so I guess I could experiment if the spirit moved me. 

I believe you are correct about the way my RELs are connected and working with the Sashas.

chazzzy007, thanks for your input too.

Thanks lalitk. I will investigate that.