I really like the FP-601/602 connectors and I have made several balanced cables with them. I like Cardas Quad Eutectic solder, even though it does have lead in it, I find it works really well at making a successful solder joint.
I would look at bulk preconstructed cable from high end suppliers such as Furutech, Neotech, or perhaps the VH Audio Symmetry. If you have to make it yourself, my favorite is the VH Audio Fine Silver Interconnect recipe and my preference is to use the caulk backer material as the core. If you carefully apply some strain relief at the connector, be careful not to overheat the caulk backer material as you apply heat shrink (the CB will melt), and don't literally pull on the cable by the caulk, you can make a reasonably sturdy, and pretty good sounding balanced interconnect (or rca interconnect) using this method. I have one made with 23awg silver in cotton wire that sounds as good as any silver IC I have had in my system. You can also make it with copper. Although the wire wasn't available at the time I made mine, I would now strongly consider using the VH Audio UniCrystal OCC Copper (or silver) Hookup Wire with AirLok foamed/cellular Teflon Insulation. You can look into things on your own as to how to configure and space the ground wire and shield (or not). Good luck with your project.
I would look at bulk preconstructed cable from high end suppliers such as Furutech, Neotech, or perhaps the VH Audio Symmetry. If you have to make it yourself, my favorite is the VH Audio Fine Silver Interconnect recipe and my preference is to use the caulk backer material as the core. If you carefully apply some strain relief at the connector, be careful not to overheat the caulk backer material as you apply heat shrink (the CB will melt), and don't literally pull on the cable by the caulk, you can make a reasonably sturdy, and pretty good sounding balanced interconnect (or rca interconnect) using this method. I have one made with 23awg silver in cotton wire that sounds as good as any silver IC I have had in my system. You can also make it with copper. Although the wire wasn't available at the time I made mine, I would now strongly consider using the VH Audio UniCrystal OCC Copper (or silver) Hookup Wire with AirLok foamed/cellular Teflon Insulation. You can look into things on your own as to how to configure and space the ground wire and shield (or not). Good luck with your project.
