Probably an age old question. I have (2) 2C 's . Chassis are marked as 6BZ6 for V1. Manual shows as 12BZ6. One of my has 6BZ6 other has 12BZ6. I assume by all documentation the 12(BZ6) is correct . I havent got the voltage checked yet. Which one is correct ?.... Tnx de Bob KA3PNZ