Believe me, (assuming close miked here) a single mic on a bass rig doesn't significantly affect system gain or eat up significant headroom vs a DI. Bleed really isn't an issue for mics on bass or guitar amps, unless they're running very very quietly.
I can also say from experience that putting a mic on a ported box doesn't typically result in a very significant loss of low end, probably owing to the proximity effect of the mic. A DI signal will have LF information that most bass guitar cabinets can't even remotely reproduce accurately. In most situations some HPF at the desk is necessary on both types of signals.
I'm also not a fan of dedicated kick drum mics on a bass rig. They almost all have a really deep mid scoop when used close up. I like mics like the 421, Beyerdynamic M88, Beta57a and even the lowly 57. They leave the important mids in the signal.
All in all, for anyone with a modicum of skill as a sound person, putting a mic on a bass rig and dealing with it is not even close the most difficult thing they'll face on a typical gig. It's trivial. Of course there are situations where it works better than others but seriously, reading this thread would make anyone think that miking a bass amp and making it work in the mix is an insurmountable difficulty. That's simply not the case.
I can also say from experience that putting a mic on a ported box doesn't typically result in a very significant loss of low end, probably owing to the proximity effect of the mic. A DI signal will have LF information that most bass guitar cabinets can't even remotely reproduce accurately. In most situations some HPF at the desk is necessary on both types of signals.
I'm also not a fan of dedicated kick drum mics on a bass rig. They almost all have a really deep mid scoop when used close up. I like mics like the 421, Beyerdynamic M88, Beta57a and even the lowly 57. They leave the important mids in the signal.
All in all, for anyone with a modicum of skill as a sound person, putting a mic on a bass rig and dealing with it is not even close the most difficult thing they'll face on a typical gig. It's trivial. Of course there are situations where it works better than others but seriously, reading this thread would make anyone think that miking a bass amp and making it work in the mix is an insurmountable difficulty. That's simply not the case.
