After you get used to it, it never sounds like you remember when you first put them in. By all means check out the system, make sure that all of the polarities are correct, that can cause cancelations that would effect your bass response. The other thing to keep in mind is that a woofer's suspension is subject to loosening up. After you abuse (use) the speakers for a while the suspension will loosen causing a lowering in the resonance of the woofer, and that effects the transient response of the woofer. But it shouldn't be *that* noticable.
