How i can make stereo mix on ?with lifechat stereo mic

Sorry, but the Lexicon Alpha does NOT have Phantom power and you can't use a condenser mic with it without a Phantom power injector or preamp.
If you mean you have a Phantom power injector then it should be working. Do you have seperate mics for the two channels of the stereo? If you have only one mic, then only one side will record unless you set for mono recording and then dump the recording into stereo voa Cubase. I would recommend you get a small mixer... even a 4 channel one to use ahead of the Lexicon so you can mix and PAN your mics the way you want them. The recording and trying to control the panning in Cubase can be frustrating... The Lexicon really doesn't have anything built in to PAN the mic to the center when stereo recording. Small mixers are inexpensive and often you can find them used or in pawn shops for cheap.

Change ur headphone......

This Mic is not a stereo Mic. If you're using a windows computer, check your sound control panel to see if the mic wasn't suddenly set to two channel device.

ok i putted the mic volume to off and it stopped

sir,
i have siemens sx1, i got the problem in starting of cell....its automatically off whenever on it...
kindly advise me the solution..

-right click on the volume icon on the system tray and select recording devices

-there should be a selection that says stereo mix or something like it
if not.. right click on a blank space on that box and select "show hidden devices"

-you must disable this device

-make sure your microphone jack is enabled

-click apply and it should work

You cant wire then directly there is a USB D-A chip that controls the headset converting to 1/8" mini plugs may work one for the mic and one stereo plug for the earcups

my head phone is working but my microphone does not, there are two cord one is red and other black, when i plug black its fine for head phone tell about red cord

I absolutely loved my Lifechat LX-3000 from Microsoft. very clear sound and the microphone didnt destort my voice when I DJ online.

Stereo requires two different inputs, as the very name implies. If you're using just one mic, it is possible to "pan" that input to both left and right, but is not truly stereo. For true stereo, you must have at least 2 mics, or 2 or more of any other sources...accordianman