I have a pair of Infinity RS-5000 speakers but the only service manual I could find was for Infinity RS-5000A? It doesn't say anything on my cabinets except RS-5000 on the input terminals? Is the ''A'' version a slightly different speaker or are these both the same speakers? I'm about to recap the crossovers and if you know about these crossovers you'll know they are a real bastard to get at to read the capacitor values?