Hi Ugin! Here's how I do it. Unsolder old connectors with hot iron using cold scrap wire to soak up old excess solder. Cut off the tinned end of the wire. Remove about .5cm of insulation by holding wire tightly just below so as not to stretch it, and pull insulation up over new end. Buy desired gold or silver plated Neutrik connectors http://www.neutrikusa.com/ or more fancy gold or silver mined on some other planet (hehe). Heat the intersection of connector flanges and wire with hot iron, feed silver-content solder (3% silver from Radio Shack is the cheapest I could find) into intersection, not onto iron! Then lift away iron. Simple? Sure! Just practice on the removed connectors with scrap until you feel confident with the new ones. Remember that RCA's require only two conductors and XLR's have three...American Standard for XLR is 1. ground; 2. cold or minus (out of phase); 3. hot or plus (in phase). For European Standard reverse 2 and 3. So...if the center pin on your RCA has two wires, split them and connect them exactly to XLR's at both ends. If one wire only, connect it to pin 3. If the house burns down, don't blame me, haha. Good luck!
