How do I determine polarity in K-61-K squawker if there is no yellow mark and the terminals are of the same size. There is something that looks like an "R" in white paint or marker by one of the terminals. This is from Forte II of the 1990 vintage. I am not changing the driver, just need to hook up Crites crossover and would like to avoid taking the driver apart if possible (there suppose to be a mark on the diaphragm). Thanks
Serge