When I used passive SR5250 x-overs to run speakers bi-amped my SR5250 woofers were putting out incredible amount of lower midbass. The moment I went active with Arc Audio IDX that midbass is gone. Don?t get me wrong, there?s nice midbass but nothing like it used to be. It felt more like a small sub in my doors and now it?s like a regular decent midrange speaker.
Before and after going active I had/have my LPF on both ? 60 and 80Hz and in both cases I had sub-feeling when bi-amped and full range feeling when active.
I even turned up 125Hz and 275Hz frequencies on my eq (Arc Audio XEQ) and still can?t get that ?sub? effect