I also noticed the same using a Crown amp for my Empire. Is there a way we can add something to get the boost at certain frequencies that the original Epik amp gave? Is this a place for a mini DSP?Not sure if anyone checks in here anymore but I finally got tired of looking at the dead empire I had and decided to finally try the passive route. I spent the weekend going back and following Dreamliner's guide and was able to successfully complete the process. Thing is I still have one working and I can't get the passive setup to come anywhere close to the low-end of the working empire. I have tried two different amps. a Crown XLS 2000 and a Behringer ep4000. Things got a little better when I went back and tried the crown in bridged mono but still nothing in comparison to the original empire. I'll try the behringer in bridged but that just seems like over kill.
Any ideas on what I am missing?