Sorry...posted before so I've already gotten the sense for the output I need.
Basically, for HT I need massive output and two Epik Empires would be a minimum. I have an open 1st floor with at least 7K cubic feet and more considering that there are no actual doors on the whole first floor. Luckily, I am not worried about pressurizing this space as much as most typical people on these forums. I just don't do much HT but can see myself becoming a true audiophile quite quickly.
So, I asked the specific musicality question because that is what I care about first and foremost. I am concerned, if this makes any sense, that the empires are almost too inexpensive! They are massively heavier than the sealed SVS and put out much much more SPL.
But I really want a sub for music that can produce mid 100 dBs for typical Hz ranges seen in music. I want JL Fathom type quality in terms of a sub for high end music.
If the Epiks have similar transient response, tightness, etc to the SVS sealed, then no brainer. Two empires coming up.
But something about that nice small SVS package appeals to me aesthetically and if the music quality is superior I'll trade output in a second. Maybe there is no one here who can directly address this issue, but I thought I'd make a last ditch effort before closing my eyes and buying.
Rhythmik I know is praised for SQ but I really want the evenness of two subs and I think I just don't want to pony up for two of their sealed 15s. Same for the sealed 15 HSUs.