I'm thinking of buying a Profet IV(400W) From Warwick. Now, to top that off I want a cab from Warwick as well. I don't know a great deal about amps, this is my first "real" one, so which cab do I choose? The choice stands between a W-410 and a W-411. What does RMS stand for, and does it tell me how much watts the cab can handle? Correct me if I'm wrong. Now, to the question: What is best to use to the amplifier in question, a 300W RMS W-410 or a 600W RMS W-411 cab? Does more watts on the cab mean a weaker sound, ie if I have a 200W amp and a 1000W RMS cab, do I get no sound? If I choose too much RMS, can I add more power to the amplifier later? Thanks.