Thanks, Everyone,
My cabinet looks exactly like the pair in CLD's post, and has the speakers labeled "Sunn Guitar Transducer."
I just found an empty 415M cabinet (two v-shaped speaker baffles with two 15's in each) in fairly decent shape. I'm not into internal originality, and the budget is not as wide as I'd like. Any suggestions as to what four 15-inch speakers I should use inside this cabinet -- for bass with a 200s head?
Thanks and regards,