Just ordered the parts from Sonic Craft to rebuild a set of Polk Monitor 10B crossovers I purchased a few months ago. The replacement XO's I purchased from eBay are in much better condition than the originals were, before their rebuild, on the 10B's now. The originals had been DC blasted by a Sony receiver I once had. I know a great deal more about the subject and My service equipment is a vast improvement. This time I am going with Mundorf MCap EVO's, and Vishay Mills resistors. I am spending 1/2 the money I spent rebuilding the originals. There may be problem with the left side XO right now. It's polarity is not right and it may be triggering my Yamaha AVR to shut down occasionally. I am going to rebuild these crossers to 10A spec's, the only difference is I am removing and bridging the polyfuse. The polyfuse has a nominal resistance of .5 Ohms so R1 in the 10B is 2.0 Ohms. The 10A which has a 1 Amp fuse R1 is 2.5 Ohms. A 2.5 Ohm 12 watt Vishay Mills is going in. The safety circuitry in a modern audio amp is far better then anything a vintage speaker such as this set of vintage Polks ever had. Vishay Mills MRA series resistors. These standoffs are much, much better than the originals.