I have an Ampeg AV210. It's 8 Ohms. I can't use it stand alone with my SVT-CL. I was thinking of switching the speakers out for a couple of tens that would give me a small, sealed 4 ohm cab. I'm looking for a crunchy natural overdriven sound. I'm almost thinking guitar speakers. I don't need it to be very loud or deep. Thoughts? Recommendations?