Xbox 360 Headset Trouble

Hey guys, I'm having some trouble. My Xbox 360 headset is being stubborn. For some reason, other players are not able to hear me clearly or loud enough. They can hear me, but it's pretty quiet and they need to strain to hear me. Even when I put the mic close to my mouth.

I've already tried blowing in the connection port on the controller like the old Nintendo game cartridges, I've obviously tried turning the controller off and on and replugging the headset.

The headset if almost brand new and I've only used it a few times. It was working fine several days ago, but today it's not. It's not muted on the mic itself or under the settings tab in the Xbox 360 dashboard, and I turned up the settings volume all the way up. I've tried speaking with the fuzzy thing on and off.

Can somebody help me?