I have heard lots of people say and have seen lots of reviews saying that the EPI's lack low bass. However, it's not that the woofers are not capable of it, they are just low efficiency. Using an equalizer, the bass is accurate, powerful, and very listenable (no distortion or buzz from the drivers). But you'd better have some power to drive them! I've had a 20 watt receiver clip tons driving them, and they weren't even ridiculously loud. Fortunately, those inverted dome tweeters are solid as hell and didn't seem to notice anything happened.