interesting thread, I have the exact same issue with my 2.5's. I found that placement made a difference, but ultimately I think I'll eventually break down and get a couple of good traps to solve this. I am surprised you didnt like the ls-16. I use it with a quad of mullards, along with the 100.2, and SR resolution reference bi-wire and balanced connects. I have been thorougly pleased with this set up. The last piece to the puzzle for my system was an Audio Magic Stealth plc, and it made a huge difference, everywhere, including tighter bass. Nothing's perfect, but all things considered, these 2.5's strike the best balance of any speaker I have ever heard. Keep working on break in, allow plenty of space around them, and experiment with your listening position front to back. I find that certain bass nodes will be more/less pronounced depending upon where I sit
Rg
Rg