Our lead guitarist bought a used Classic 410, somehow, he blew one of the speakers. He wants me to use it tomorrow for a neighborhood jam. I would be running it through a Carvin BX 700. He says missing a speaker is no problem. I say it is simply because the impedance is out of whack. He disagrees. I have a 10" driver, but it's 8 ohm, he says that will work. I don't know but I don't want to blow my speaker, either. What can I tell this guy? Thanks in advance- this is an awesome and very helpful site even if I don't log in often.