I have recently purchased a pair of Cornwalls'. The serial numbers are 33Y972 and 34Y278. I took the back off to see what crossovers they have. I am confused as these have a 20 uf capacitor in them. Is this right? I am no expert on Klipsch but I have only seen 2 and 3 uf capacitors for these speakers. I have attached a picture. Thanks for the help in advance.