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xlr to rca

Posted by castironandtubes on October 15, 2008 at 22:04:40

I have a 1/2" 4-track tape machine that I am trying to hook up to a conventional stereo system. The machine has 4 xlr inputs and 4 xlr outputs. My stereo is mostly vintage tube stuff, the preamp is a Scott 130. I made a pair of cables to connect two of the xlr outputs to one set of stereo inputs on the preamp to listen to two of the tracks, but I am getting a significant buzz. I used some Radio shack 20-ft. cables, cut them in half and attached the xlr connectors. The negative wire is a braid wrapped around the positive wire, I guess making a pseudo shield. I attached it to pins 1 and 3 on the xlr connecter (they are shorted), positive to pin 2.

The sound comes through fine and sounds great, but there is a very clear buzz in the system regardless of which input is selected as long as the wires are connected and the tape machine is on. I am assuming this has something to do with joining pins 1 and 3, and I am wondering how I can make this connection without the buzz. Any help appreciated.

Dave

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