Hi. this is my first post. Does anyone on here have the Gallien-Krueger 800 RB and use it in biamp mode? I have been using an Eden D115 cab (the cheapest one I think), for years, but it recently blew, so I need another speaker and I want to get the best possible speaker configuration for this amp. I'm thinking a 4 ohm 15" or 18" and an 8 ohm 2-10". The problem is finding a driver with the right specs. I'm not sure about the same Eden cab with a new driver, because it's back-ported and probalby has a bad ratio of height:width:depth. Also it seems there are way more 8 ohm speakers to choose from than 4 ohm, but I want all those 300 watts from the low-range amp. any advice??