Hey guys, I'm pretty much clueless when it comes to watt / ohm compatibility between the amp and the head. I'm looking into buying a Sunn 2x15 and have an offer for one for $225. I'm told the amp has a capability of 300 watts and 8 ohms while the head I have is a 480/50 watt bi-amp (Gallien-Krueger 700RB-II). Will they be compatible? What are the do's and don't of watts and ohms? Thanks.