In small bar gigs I assume you're talking about the PA being vocals only, maybe horns or a keyboard if you have them with your bass amp being what the audience hears of your instrument. I've used a bassman 135 or a Peavey T-max (200 watts @ 8ohms, 350 @ 4) with a 15 or a 212 and done just fine if you're playing some sort of cleaner music ala country, blues, old R&B, some top 40 stuff and even classic rock if your other band members are sane about their volume and leaving the other instruments a place in the mix. If you're playing more hard rock stuff or something with a lot of bass like reggae, hip-hop or somthing, then a more powerful amp and/or a higher sensitivity cab or a cab with with more drivers in it or two cabs could be in order. The T-max can get the job done just fine at these types of gigs, the bassman can't.
It's always better to have a little more than you need and turn down than bring less rig than the gig requires and not be able to turn up anymore. Outdoors is a different story, need more power and more drivers, sometimes just to hear yourself if the stage is spread out wide.
It's always better to have a little more than you need and turn down than bring less rig than the gig requires and not be able to turn up anymore. Outdoors is a different story, need more power and more drivers, sometimes just to hear yourself if the stage is spread out wide.

