I have had a couple rehearsals at this studio that has a GK mb500 with a GK1x10 on top and some 1x15 without a front grill on the bottom (i wasnt looking too closely). I know all the science guys will say that the mismatched cab was probably the culprit but my B string low notes were inaudible. I have played all sorts of house rigs in the past and have had to adjust lines to fit the amp (if it cant handle the low, dont play low). Its strange to me tho cuz I have one of those TC 2x8s that sounds the B fine with my GB Streamliner 900 (smallest amp I own atm). Got me wondering if all you techie 5 string players have a modus operandi for what will and will not handle a low note with no problem. I play passive J bass no pedals for reference.