Hey guys. Sorry to keep asking so many questions, but looking at all the avaliable amps is a little overwhelming. I was hoping someone could explain the relationship between speaker size and wattage. I have a combo that's 20 watts and has a 12"speaker, but I see a mark bass amp that has 1 12" speaker and 300 watts. I would think that you would need a lot bigger of a speaker with that much more wattage(but then again, I don't know much). So, which is responsible for the volume and which for the sound(i.e mellow or punchy), and which is more important in a amp that will only be used at very small jams?