Just received my ep500 v4 and did the room correction thing with my anthem, here are my first impressions...
the ep500 replaces a ksw-15 down-firing sub 15'' 800w (made trough 1998 - 2003) I've had since year 2000
my impressions between the two (room size 12.5 x 21.5 x 7.5)
The ksw-15 rumbled a lot and shook the hole house, dishes were shaking, you could feel the bass was strong but lacked the musical punch or snap, it felt muddy and seem to lack a lot of info on the bass spectrum compared to the ep500. With the ksw-15 with a movie you could feel the explosions but with concerts it wasn't all that pleasurable.
The ep500 v4 didn't shake the house, had the volume on the sub 70% up, it seemed anemic compared to the ksw-15, it felt very precise in a concert dvd's but a tad weak with action movies I expected a little more from this sub, best description it's missing that over powering bass effect. I'm debating if I should return it, perhaps give it a few more days and play with settings, debating if I should get the svs 13 ultra or a second ep500
