I am looking for pointers to battery powered and blue tooth equipment.
I want to use small speakers on and in resonant objects for a museum project.
And I’d also like to make a performance in a space with no mains available.
Mixers and small (small as cheaply possible!) Bluetooth speakers.
And i am very interested if there is experience here on running either of these.
Exciter speakers can be battery powered if you find the right amp for them. If you use a small exciter, any battery-powered amp designed for small speakers should work in theory. But better ask somebody who knows more about it than I do.
So maybe check this thread: Transducers / Exciter Speaker
EDIT: this was teh TWSU kit: https://make.techwillsaveus.com/speaker-kit/manuals/get-started/#/ It’s a really basic amp they have there.