Nickt.... you can flog me for jumping on this thread...and I am truly sorry. But I have owned a pair of Avalon Eclipse's ( sealed enclosure ) for over 7 years and I still enjoy them. As Sirspeedy stated, something can be said about the sealed enclosure designed by Charles Hanson. Please don't shoot me here....but would a good sub be a nice match for the Avalon Eclipses's ????? As they say ; ''mo bass, mo problems ''