9650 - voyager pro, low volume issue, plz help

I received a refurbed 9650 Bold when (like many) I was having problems with my 9630 trackball. My Voyager Pro has really low volume now and I can't figure out if I have a faulty phone or just an issue with compatibility. The headset was plenty loud with my Tour. Is anyone else using this combo and having problems or getting a loud volume with headset. I can purchase a new Bold with my NE2 if it's an issue with the phone, but I don't want to waste it with LTE just around the corner. I've tried to disable enhanced audio to no avail. I work in loud environments, so a loud volume is necessary.