Not sure where to post this question so I'll start here. I am having trouble getting the tight low end sound that I want. I currently play 4 strings tuned C-G-C-F and the low end just sounds muddy and weak. I have tried a few different basses(all 34" scale strung with 115-130, 100, 80, 60) tuned this way, Stingray 4, ESP Custom with Duncan MusicMan Style PU and preamp, as well as a BC Rich Exclusive with a passive Duncan MusicMan style PU. My current rig is an Ampeg SVT Classic and 8x10 cab. I have also have a SansAmp DI and Aphex Punch Factory compressor in the mix. Would actives do a better job tightening up the bottom? I have read Ampegs sometimes lack a tight bottom? Any suggestions at all.........??