Studio Monitors/amplifier: problem with 5pin jack (HELP!)

[jdblaiz]

Hello to everyone at ePanorama forums. My name is John and I have an Event Tria 2.1 studio monitor system that was producing a 'buzzing' out of one of the two satellite speakers. This unit was discontinued from manufacture in the early 2000s. By way of brief background on this unit, it has a subwoofer console that houses multiple power amps. The subwoofer console is connected to two satellite speakers via a 5-pin speaker cable. The cables are female to female and the male 5-pin jacks are located at the subwoofer console and each satellite speaker. The cables supply audio AND power to each satellite speaker. I eliminated that the buzzing was due to a bad speaker cable and found that the buzz is coming from the Channel A output jack. I removed the sub woofer to look inside at the back end of the 5 pin plug for the channel A output jack. The wires connected to the 5 pins/poles inside are 2 black, 1 yellow, 1 red and 1 green w/ black stripe (see the photos). I was looking in there to see that all the wires were where they should be/not touching each other/etc etc AND I found that the green/black wire and the pin it is connected to TWIST/turn. The whole pin turns and the other wires/pins in that plug (or the ones attached to the pins in the Channel B plug) do NOT turn or twist. When I looked at the outside of the plug and then touched the green wire I could see that that particular pin was turning on the outside too. Is this a potential problem with the hum/buzzing I've been having? Should those little pins turn at all? I believe the green/black wire is the ground for this output. NOW (after an extended windup!) here are my questions: Does anyone out there know what kind of connector this is? (I thought originally is was some kind of DIN plug, but I don't think so anymore). If anyone recognizes this connector, do you know either how to fix it (based on the 'twisting/turning' pin) or where I might be able to buy one? Any troubleshooting suggestions would be appreciated too. I have some electronics experience and am aware of the precautions I need to take to guard against electrocution, etc etc. I have soldering experience as well. SORRY for the long post. THANKS TO ALL IN ADVANCE!