I need a short M to M jumper to connect my CA9000 preamp to my iRiver. I have the connectors and some audio cable that has a black, a red, and a ground cable. To make a jumper it should go red on the same connector on each side, black on teh same connector on each side, and ground placed where it should be right? I've got a Microphone Madness lapel mic plugged into the recorder that I'm testing with that has a stereo connection to send the signal to both channels. I've tried making the cable twice and each time only get one channel. So am I doing something wrong? I know the cable is good because it's from a roll that was used to hook up ceiling speakers in a conference room.