so my band has a microphone, and for about 4-5 months we have been running the mic through a guitar amp, which we connected with an another guitar amp (it hasn't blown, yet, weird). the sound is okay, but it's still not loud enough.

but my friend and me have succeded in borrowing a speaker from our local church. so to connect these two, we need a mixer, right? I'm pretty much a noob to these things.

also, would it be possible to run a mic through a guitar amp, and then into the speaker? would it blow, etc. we just need the cheapest way to make it loud for rehersals, since we have very little money.