I too have never thought of the Vandersteens as being bass shy, especially at their price point. I do feel that they are very room sensitive. Adding a Vandy sub or preferably two, would be the most obvious solution to your dilemma. FWIW, it seems to me that you've put together a really nice system there. At the risk of stating the obvious, I'd suggest playing around with speaker/listener placement before doing anything else.
Recomendations Please
Hi all, my system consists of a belles hot rod 150a, a audio researcyh LS7 with NOS bugle boy tubes, vandersteen 2CE SIG II, audioquest type 8 cable (biwire). I love the sound its airy has a great sound stage but just wondering how i could get a bit more bass into the system without changing the preamp since I just got it. any suggestions??