What is it about microphones that determine whether it can pick up sound from a variety of distances and directions? For example, a band that uses a one-mic setup, uses a microphone that can pick up the vocals and the instruments. The microphone is neither placed mouth-high, or guitar height, but in b/w it seems. Are these condenser mics or cardioid? Is it phantom power? (I'm not even sure what Phantom power does.
The mics we have in church don't seem to pick up much of anything unless you speak directly into them. I'd be interested in getting a mic that we can use to both amplify the instruments (guitar and mandolin) and still help amplify vocals (we are limited by number of jacks available to us on stage).