Hi Im a new member. Im after some advice on a semi pro rig. I hope you haven't answered this quite broad question before, I looked, but i didn't find much. I've been playing for about 6 years, My 400 watt peavey combo has just about had it Im looking for a bigger set up But I have no idea whats good. Ive been looking at GK, ampeg, EV,Hartke and loads of others. I have to admit Ive got no idea what a pre-amp does for tone or power, or what active crossover is but Im after something that packs a tight punch with a big bottom end. Im thinking 4X10's, 1X15 and a big head dunno but, what's best? any ideas?