I just picked up a pretty beat up set of KP-301’s. I have completely disassembled them and am sanding/ filling the cabinets to get ready for paint. They have 2 different crossovers. Speaker A has a KP-3.0A crossover while Speaker B has a KP-3.0B crossover. Both speakers have the correct K-79k tweeters and K57-k squawkers. Speaker A has the original K-48k woofer while the other has a JBL E140-8, which I plan on replacing . Does anyone know the difference between these 2 crossovers and if they are compatible and which one is the correct one for this speaker. The serial #s are 90012825 and 8932325 respectively. Thank you in advance for any information. Cheers!
