From what I've learned off here so far, I be-leave these to be original rta-12's with a peerless tweeter. I think the stands have but cut down. I'm working on getting a parts list together and am having trouble with some cap values. C1 & C3 . Also is C4 for same value as C6 ? I found allot of info on the 12 B&C but not to much on the original. If I'm missing a thread some place please pass it along. Thanks with any help.