I threw together a rack in hopes of replacing my SVT on some smaller gigs which consists of an EV Q66 power amp and a sansamp rbi after reading about how many people loved this combo. The problem I'm having is that it just seems too trebly and isn't pushing enough bass frequency to really make you feel it. Am I missing something? Settings on the RBI are drive about 10:00, presence dimed, blend dimed, bass dimed with the mids and treble backed off to about 10:00. I get loads of volume out of the power amp, but it just doesn't hit me the way a standard bass amp would. Cabs are an Acme B2 2x10 and a Carvin RBX 210. I know I may have some issues with mismatching there, but with either of the two cabs, the sound is super sterile. For comparison, I've ran all of my other heads through each of the cabs to great results, but just can't match any of that tone with the RBI/power amp setup. I've thought of including the PF500 into the rack but that kind of defeats the purpose of the rack setup. Any tips?