Here are my results after a last attempt of calibration with the Anthem ARC for the ep500 sub, First off if you have ARC, never use the same settings for movies as for music, this means doing 2 x 5 position test, this said, with the volume on the ep500 v4 at 12 o'clock I finally have some decent bass (passed the angry wife on second floor test). I was going to pull the trigger on a seaton submersive HP, now I'm confused if I'm going to keep this sub or not or ad a second sub, these rusults having me re-think my setup a bit, I have some space to put only 1 ep800 up front (tight fit next to the m100) along with the ep500 hummmm....
