Logic Pro 8 - Audio input problems!

Discussion in 'Digital Audio' started by jimmyhat83, Feb 12, 2009.

  1. jimmyhat83 macrumors newbie

    Joined:
    Feb 11, 2009
    #1
    I have recently tried using an M-AUDIO Mobile Pre-USB running into my Logic Pro 8 (on a MacBook Pro) to record guitar.

    There is a RIDICULOUS amount of feedback and hiss even when I'm not playing. I have downloaded the newest drivers from the M-Audio website, but it hasn't gotten any better.

    Now, even when I use the built-in input, there's a ton of feedback.

    Help!!
     
  2. CalumC macrumors regular

    Joined:
    Oct 15, 2008
    Location:
    Leeds, UK
    #2
    What guitar are you using? Does it hiss when you play through an amp.

    If it does hiss through amp, it sounds like your pickups might need waxing again, if it doesn't, theres something wrong with the input that'll need looking at.
     
  3. ChrisA macrumors G4

    Joined:
    Jan 5, 2006
    Location:
    Redondo Beach, California
    #3
    THat's the first thing I'd check, That maybe the noise and feedback is really coming from the guitar. It could be the the direct input is just so much more sensitive than the amp. Doesn't the m-audio have a gain knob? Turn it down a bit.

    The other thing to know is that computers spray out electrical "noise" for many yards all around. Try a really log guitar cable and get back 30 or 40 feet from the computer. But watchout for cordless phones, TV sets and whatever. With the gain set high and a single coil pickup you are going to get noise.

    Also the impedance on the amp and m-audio interface are maybe different. If one is higher it will be more sensitive to noise Impedance will be listed in the specs of each device

    This does not sound like a software or driver issue to me. Sounds "analog". That's good because you may have noticed that m-audio has no drivers for the current release of Mac OS X.
     
  4. sophieinthesky macrumors newbie

    Joined:
    Sep 10, 2009
    #4
    lose hiss on onboard input

    Hi Jimmy,

    I just came across a similar problem in Logic Pro 9.

    I was using the built in input to record guitar, but when I hooked the M-Audio fastrack pro, through which my condenser mic is powered, a lot of background noise was generated by the built in input (it was so affected that when I lightly tapped my macbook, the vibration was picked up as an audio signal in Logic!)

    I am not sure how to solve the problem with recording through your particular audio device (I do not use mine for guitar) but if you want to go back to using the pn board input, without experiencing all that hissing, then you need to turn off and disconnect the M-audio interface. This alone isn't enough - Logic will still try to send data through your external device, so to reset your input settings, go to:

    preferences>audio> (devices>core audio) and check the 'output device' to built in out put and the 'input device' tab to built in input. This should get rid of the feedback if you want to go back to using the onboard input until M-Audio update some drivers for us.
     

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