Jfg,
Good to know that you have not given up on your existing system and have added room treatments. Curious to know if you did DIY treatment or purchased them from some firm? Treatments at first reflection points also help. Back of the room is also important. How far do you sit from the speakers and the back wall? Also experiment with throwing a thick rug over the TV when doing critical listening and see if you notice any change. One more important thing is - your own "chair" position. I have noticed in my system that even moving 3-4 inches from the optimal position changes the way your system sounds. Identifying that 3-4 inches is important, because "that" is the position that gives you goose bumps. I am sure that your PSBs can do that with the JC1, which can provide Class A for up to 25 Watts.
BTW, what was your wife's reaction when she saw the treatments?