Idk that makes no sense how would the cvrs "shat all over them on ever level." They are so closely spec'd. Did you make any other changes? Did you just directly swap 4 cvrs into 4 hds2's into the same build/box or what? I personally ran hds2 15's at ~900w each for over a year and never had a problem.I own soundqubed subs, the hds2 versions though. my cvr's shat all over them on every level. thought they were gna be louder but I was wrong. now im stuck with 4 hds2 15s. lesson learned. however, I hear the hds3 subs are decent for the price. from what ive seen, not heard at least