Our band is putting together a PA system. This question was posed by one of the members. Any answers off the top of your heads? "Given a subwoofer capable of 600 watts program handling or roughly 300 watts continuos(rms,) and 8 omhs of input resistance, what wattage amplifier would be most appropriate to drive a pair of these subwoofers without over working the amp? That is, how many watts per channel at 4 ohms? I know that more is better, but there must be some optimal number." Any help is appreciated. We have a powered mixer (yamaha), but I'd need to check on the numbers if anybody needs them. Thanks.