Advice on portable / wearable bass guitar amp
Need advice on a piece of gear.
I've been asked to play at a worship event with one of our acoustic guitar guys. He's playing unamplified. I could just bring an acoustic guitar, but would rather play my bass.
Issue is that we're not set up in one place... I'll be playing as we're walking from place to place. One solution, I suppose, is to use an acoustic bass... though these don't seem to project as well / be as loud as an acoustic guitar. The other is to use some sort of battery powered amp that I can wear / carry as we're walking.
Any off-the-shelf device that I could buy that would accomplish this?
Barring that, I've built battery-powered guitar amps before (just nothing this small.) What output power and speaker size would I need to use for a project like this?