I believe your problem is most likely the preamp. As I recall, the CJ PV10A is a very warm preamp with a rather flabby bass. (It can sound great, though, with the right gear.) I also had a warm tube preamp with suboptimal bass response and replaced it with a MF A3cr preamp (one of the better preamps I've ever owned, great for the money). The bass tightened and extended considerably compared to the VAC CLA-1 it replaced.
Obviously you also need to play with speaker positioning to get what you feel is optimal sound. It also doesn't cost any money. But if you're still not happy with the bass, see if you can borrow a different preamp.
Good luck,
Michael
Obviously you also need to play with speaker positioning to get what you feel is optimal sound. It also doesn't cost any money. But if you're still not happy with the bass, see if you can borrow a different preamp.
Good luck,
Michael