I’m frustrated

M-Track Only Sending Mono Signal Through USB

Using M-Track to act as an interface (sound card) for my radio broadcast streaming. I plug the Right and Left channels of my mixer into the Right and Left Guitar Line channels of the M-Track. I plug the USB into my laptop and set the M-Track as the default recording device in Windows 7.

When recording with either Adobe Audition or using my streaming application and recording my stream, the M-Track is sending a mono signal instead of a stereo signal through the USB yet I hear a stereo signal through the headphone jack. How do I resolve this? The Direct/USB setting doesn't affect the recording at all. It also sounds like the midrange is lower.
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  • I’m frustrated, almost about to become angry
    UPDATE: it appears that the M-Track is sending a stereo signal but it sounds like the compression of the stream is very low. That's why I initially thought it was mono. It is hard to tell the difference between right/left channels...

    Why would it stream in a low compression rate to my computer if its using the USB?

    This is very frustrating. I wish I could attach a sample here but I don't see a way to do so.

    So if no one responds, I guess the only things I can do is contact M-Audio and if they don't help, I'll send the thing back and buy from a different company...
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  • Hello Bill,

    Thanks for posting. I'm sorry to hear you're having trouble!

    Let's check some Windows settings first. Go to the speaker icon at the bottom right of Windows (next to the clock). Right click and select Playback Devices.

    Select the M-Track and click Properties. Go to the Advanced tab.

    Try the settings as follows; see the pic below (this is for an M-Track Quad but the same menus apply to all M-Tracks). When you click the "Test" button, you should here a tone in the left speaker, then the right (clearly isolated).



    If you hear this at the headphones but still not the speakers, then could you provide some more information about your speaker playback system?

    Let me know and I'd be happy to help!
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  • I think maybe you only read the subject line but not the two posts on this subject...

    I'm not doing any playback through the M-Track. I'm attempting to record from it via USB.

    I have a 1/4" cable plugged into each LINE/GUITAR jack on the M-TRACK leading to the MAIN OUT of my mixer.

    It sounds fine through the headphone jack of the M-TRACK but when I record from it then play it back (on my laptop headphone jack, not the M-TRACK), the audio playback is very low quality like it was compressed at a low rate. I can barely tell that it is stereo and the midrange is faint.

    If you have some way for me to send you samples of what it should sound like and what it does sound like after recording from the M-TRACK, I think that will help. I have a 9 second sample I can send.
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  • To confirm, when playing audio into the M-Track, both the DIRECT and USB sides are yielding the same signal, which is satisfactory? If this is the case, then we know the M-Track hardware is working properly.

    DIRECT = audio at the M-Track inputs
    USB = audio as being sent back from Windows/Audition/etc

    With that being established, this would point either to a problem with your other monitoring source (headphones to your computer directly) or perhaps some type of formatting issue that occurs when exporting from Audition or the streaming software.

    The M-Track has absolutely no data compression abilities. It sends the audio which XYZ software then encodes to whatever format. To my knowledge, Audition records direct to WAV file as most other apps will.

    Let me know some more details and I'm sure we can narrow it down.
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    • via the USB interface of the M-TRACK to my laptop. I'm recording using the M-TRACK as default output device in Windows 7 x64 in Adobe Audition. it does the same no matter what software I use to record with... I seem to be repeating much of what has already been posted in this thread...
    • I mean default input device...
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  • I have the same problem! I use Ustream streaming /broadcasting software and the input of M Track Puls M Audio are recognized! But the inputs (my Neumann Microphone conetcte at the 1 Mic Input give to the Ustream Producer Softwre a mono signal ;(((

    Can you tell what the matter here??
    And how to slove that problem??
    Best regars
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  • I think the mic inputs are mono only.. I was using Guitar/Line Input and discovered that in order to play my recording through the lap default audio card, I had to unplug my M-TRACK. The reason: My laptop sound card couldn't handle the output while another signal was going through the M-track.

    So, I either had to listen to my recording back through the M-track or had to unplug the M-track to hear it clearly through my laptop sound card.
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