Wow, thans for all the replies! I think I,m going to leave them the way they are. I thought that upgrading to a heresy 2 woofer would make some difference but I dont think I want to mess with them.b After all they are awsome sounding speakers. By the way I do have a 15" kicker solo I am using with a Dbx BX-3 amp running it. Awsome!!!! I think I'm going to save me money for the Klipsch Belles I've been dreaming about.... Again Thanke all!!!!!!!!!!