Well, I was thinking the ability to set individual distances for the 4 subs might help me in smoothing the overall response too. But yeah, I mostly want to get the response as flat as possible below 20hz since it looks like the Daytons are producing something down there. Maybe it's not worth the ~$200 but I'm not sure where that money would be better spent to improve acoustics in my room. Maybe I should add a second EP4000 first. And I do need to build some bass traps at some point. But tinkering with the minidsp seems like more fun.