My DC H10-76 headset isn't working right. It was brand new 3 weeks ago, so it's not like it's worn out. What's happening is it's almost completely inaudible. I first noticed it on today's flight at two different stations in the airplane. It was so bad that I had to hand comm over to the copilot for the entire sortie because i couldn't reliably hear what was being said to me by ATC. This was with all aircraft volume control and headset volume turned up to the highest level. Blowing as hard as I could on the microphone produced a barely audible sound in the headset, and I can hear SOME sound over the headset, just very quiet, like the volume has been turned way down even though in reality it's at it's max setting. Had the same result when I pluged it into 2 different stations on the ground, so I'm pretty sure it's the headset and not the audio source.
I'm suspecting possibly the mic cord has been plugged in improperly, it's the only thing I can think of aside from an internal fault. There are no visible frays or other damage to the wires or headset itself, and it has never been dropped or otherwise abused. The mic cord is marked NEXUS on one side of each plug with numbers on the opposite side of the plug. If you have a DC set, could you please look and see what your plugs look like? should it be "NEXUS (male plug) -> (female plug) NEXUS" or NEXUS (male) -> (female) U-172/numbers?
Any other troubleshooting would be appreciated.