First of all - I'm a huge GK fan. I have (2) SBX410 cabs that are in storage due to a speaker issue in one of them. It appears the wire lead that goes through the cone to the voice coil has come "loose" and makes a buzzing sound. GK doesn't make these speakers anymore so I moved onto a Mesa PH610. My question is this: The SBX cabs are rated at 400w each. My 700rbII is rated at 540w @4ohms. If I run 2 of these cabs, is there any danger with frying the speakers? I play speed metal with a five string and am wondering if 400w cabs will be able to handle this current setup.