Hi guys, i play with frudua gfj5 direct deal bass guitar active/passive mode. Usually I play with a tnt115 peavey combo, and low B works fine, same volume as the other strings. But, during last live, i got scared cause my low B during sound check sounds awful, really awful, no volume, no sustain, like an entire dead note. I play live through Hartke Ha7000 + Ebs proline 410. I noticed that freq response of the cab starts from 70hz.. a bit too high for low end freq reliability. I'm wondering about to buy 15" cab, or maybe an ampeg 410hlf, cause freq response start below 30Hz, is it a real spec? I also thinking about change amp head with an orange terror bass 500W. Is a good choice to change entire gear with this new setup? (orange+ampeg hlf) Thank you !