ok so heres the problem:
so as some of you know im in a band. me (lead guitar), a rhythm guitarist, a bassist and a drummer.
now, the rhythm guitarist has an acoustic. now, its kinda obvious what the main problem is.
you cant hear him over the amps and the drums. at all. its as if he wasnt playing in the first place
and he has little intention of buying a electric guitar, and a PA system for his acoustic costs a lot.

i feel as if, at least for the guitar part, im carrying all the weight. ive talked to him about it and he just mumbles something and walks away.
i really have no idea what to do. one thought is to kick him out of the band but then again, hes also my best friend so i dont want to have to do that.
anyone have any advice?