Lately I've noticed that some basses (the good ones especially) can take on multiple personalities, depending on how they're set up. I mean, more than just the obvious, in terms of raising and lowering the strings. It's as if a particular action brings out a resonance in the wood or something. For example, I have this one bass, when the action's set low it sounds just like an Alembic (but with more high end), it's got that tight-wire piano wire sound. But when the action's up higher, it gets virtually the same slap sound as a jazz bass. Normally I wouldn't associate those two sounds with the same bass, but for some reason the combination of woods or whatever makes this possible. And it's only a difference of maybe a millimeter or two as you're raising or lowering the action. Does that make sense? It's almost as if some instruments "like" a particular action. Why does this happen?