My Crate BT350 has bi-amping capability, and I'm really looking into getting a 2x12. However, my 4x10 is 4ohms, so I've been kinda upset that i'll have to sell the 4x10, just to buy the same cab, but in an 8ohm version. However, I came upon an idea. Say, I buy a poweramp that runs at 350watts at 8ohms (500watts at 4ohms?). With the Crate (this might be the same for all amps, i'm not sure), when you Bi-amp, one of the amps will handle the low frequencies, and one will handle the high frequencies. And you can adjust the frequency cutoff, and all that good stuff. Okay, so can I keep the 4ohm 4x10, and power it with the crate, and then buy an 8ohm 2x12, and power that with the seperate power amp? I understand the whole ohm issue when running two cabs into the same amp, but since they're different amps, they are independant from eachother right?