Yeah, Bill certainly has a point. Another option might be to use twist-on F connectors. They get a bad rap sometimes, but I’ve had good luck with them in static installations where the cable won’t be messed with once it’s in place. You could run RG-59, use twist-on F’s at both ends, then use some F-to-RCA converters for the connections to the receiver and sub. Your local Radio Shack will have both.
Regards,
Wayne A. Pflughaupt