I traded for a pair of KEF Corelli speakers and got them home and they just didn't sound correct . http://www.audiokarma.org/forums/showthread.php?t=592200 And found out one of the crossovers had been replaced with the correct replacement crossover but it still didn't sound correct . The former owner sent me the original crossover , and the other one he purchased and learned of the melted over heated inductor L2 on each crossover . I replaced the caps on the two Crossover boards with the good inductors , measured all three on each board with a Meterman LCR555 and drew out the schematic The over heated inductors had changed value from 2.1 Mh to .375 Mh on one and .265 Mh on the other . Having the bad crossovers i decided to repair them also by winding new inductors .My first try was made from the barrel of an ink pen and gator aide caps . Went to the local ACE hardware and purchased nylon washers and spacers and glued them together to make bobbins with gorilla glue You can see that the insulation came off of the wire due to the heat The orange bobbin was the prototype , the two larger ones use larger wire gauge , but have the same inductance ,that i will keep for spares . The totally rebuilt crossovers . The original 30 uf 50 volt caps were tiny compared to the other caps on the board and must have had a terrible power factor and ESR compare to the other caps used . The only schematic i could find on line was totally wrong for these speakers so i want the part number in the title so if someone else does a search it will pop up . Will most likely make a pair of speakers with these crossovers if i can find a suitable tweeter . The Corelli's are now a joy to listen to .