Hello all, Thanks to paden501, and many others I finally got around to update my crossovers in my 1c. It has been a long time, and was going to have Ben do them, but I had some family matters to tend in Puerto Rico and …….wow well, Ben thanks! So, here is the way I went about: I had issues with my amp, so after sending my older gfa-555 mkII to Musical Concepts and they performed a LX upgrade to it, all my amp issues went away. So, after a while, I started updating my SDA 1c little at a time, first did Dayton spikes, then upgrade the sl2000 to rdo 194, and last the crossover and binding post. So, as far as crossover I went mainly with ClarityCaps: I used ClarityCaps for 12uf,20uf and 39uf, Sonic Cap Gen I 4.3uf, Mills MRA 12 2(7.5 ohms) 1(2.7 ohms), and for post and sda cable I went with Cardas pure copper and Cardas rca connector. It was an easy clean pleasurable job to do, however I have one big issue and perhaps I have no reason for corner, but when I replaced the 40uf cap on the old crossover I noticed that it is an electrolytic cap (I believe aluminum), and if I am not mistaken electrolytic caps require +/- directional. So by replacing it with the ClarityCaps 39uf cap do any harm since the polarity variant?