I got a very similar problem with the SMS, which I was not trusting, or trusting myself using it. I had it in the loop, and by looking at the graphs I got, I thought I lost the money. I had long nights and neighbors pissed by the night tests (after work) until I got some decent EQ, but I am not satisfied.

Interesting to see your findings. We are going to certainly learn from them. Tuning both subs sound more difficult that I initially thought.

I got the SMS and started to play around with the EP500 in several positions on the room and different EQ, and trying to figure out if a second sub will improve my room sub acoustics. I really want the second sub, but until I am positively sure I can get them tuned properly, I am not ready to buy it.