I use this miking a Gallien-Krueger 212 NEO II cab and use a GK 550 fusion amp. I place the mic about 2 inches in front of the edge of the 12" speaker. Good lows, a little less mids, and not much highs that I can hear. I run through a sub with 2 15" so my FOH guy says it's OK for that ( 40 - 200 Hz). My issue is my amp is bi-amped internally, so I can either mic the lows, or mic the mids/highs. I can't mike both unless I use two mics. So I still have to run a DI from the amp into the house for the mids and highs, a little more work for him. If you know the specs for your bass amp check out the DI (if you have one) first. You may not need this. Or you may need two. If you do not have a DI then this will put you into the subs. If you play jazz or do slapping, this may not be the best mic for those. Still satisfied but I have a good FOH guy who makes it work.
Florida Bass Dude