After a considerable amount of searching for a solution, I came upon this area on Google. I received my x51 system yesterday (Tuesday, March 26) and happily set everything up, including my Alienware Tactx headset (also purchased from Dell). I seem to be experiencing an issue where the microphone is barely picking up my voice. I've tried both the front and back microphone jacks, as well as adjusting the level and boost to max in the RealTek Audio Manager. Nothing seems to be working, and I would appreciate some assistance on this issue, either from another member or from a Dell employee.
Thank-you in advance.
P.S. Other than this issue I'm very pleased with my purchase.