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Big Room Noise SSSSSSSSS.........

Discussion in 'Recording' started by bbtodrum, Feb 18, 2007.

  1. bbtodrum

    bbtodrum Guest

    Hello again dear master minds:

    First of all i'm looking at the threads already written about this subject , and its been of great help, but i still need post it.

    Im having a big problem on my studio, on my last tracking session i just start hearing this ssssss sound on the mics. I had to stop the session and reschedule the guy. I ve started trying out mics, cables, reconecting all the stuff, from start to bottom, different in/outs but its driving me crazyyyyyyyy. Thing is before friday I was getting a hot signal with very little room sssss. Now I have to record soooo trimed down just no to get that dammm sound. It defenetly changed, something happend on the way. Ill keep trying to figured it out, and if any of you guys wana throw a word, ill sure listen. ahhh, almost forgot, Im getting more ssss from the focusrite than from the tascam, i guess thats a little bit obvious but just to say.
    thanks.

    Setup:

    mics: Shure 58, 57
    condenser: KSM 27, Sampson CO1
    Pre: Focusrite Voice Master Pro/ Tascams 1884
    cables: Hosa 6 mic in snake; xlr from vmpro to tascam
    all cables are not even 2 years old, and are in decent conditions
     
  2. natural

    natural Active Member

    Obviously, there are hundreds of possibilities, from component failure to bad wiring,to one button or switch not in the right position, to Sun spots.
    As always, Start with the simplest configuration.
    - is there noise when no mic is connected and you're listening to just the console or playback?
    - Is there noise when you have a line instrument (keyboard or tape machine) connected?
    - is the noise present when nothing is on except the speakers?
    This should get you closer to identifing the problem.
    There is usually some configuration where the noise goes away, then start adding one piece at a time until it returns.
    Hope this helps.
     
  3. bbtodrum

    bbtodrum Guest

    dammm it, the noise is everywhere.
    -1st-- i got noise on all inputs of the tascams when i turn the trim all the way up, with a line in too, with no inputs conected too, with and without the phantoms .
    -2do-- ive got it on the focusrite alone too, with a condenser phantomed on its more heavy, with a dynamic alone its less(no phantom).

    the fact that the sound stays without a line or mic in, eliminates mics and lines , right?

    I know room noise is a fact, and on a home studio like mine there a lot of contributor for room noise. The thing is, it wasn,t like that a week ago.
    And why the tascam is giving me noise on a track that has no input , nor line or mic? Also the Voice Master Pro does the same, only on mic input selection(with out any input on), but doesn't give me noise on the line input.
    thanks anyway natural, very kind
    bbto
     
  4. Boswell

    Boswell Moderator Distinguished Member

    Can you post a sample of this noise so we can identify it better?
     
  5. Kapt.Krunch

    Kapt.Krunch Well-Known Member

    I'm guessing here, but are you actually turning the input levels up all the way, and tryiong to use them that way?
    Keep in mind that a LOT of boards will generate noise when the input trim is all the way up. You are generally running the signal through a low-level amplifier that is first in the chain. From there, it goes through more stages...all the EQ and levels of the channel strips, and then through possibly subgroups and then finally out the main. If you have hiss introduced at the very beginning, every stage of the chain that the signal is going through will make it worse, and you'll never get rid of the noise.

    Is this what you are possibly doing? Maybe you used to have everything set up quite nicely, and relatively noise-free, but in the heat of the recording session, you felt you needed more boost on your mics, and you grabbed the input levels, when perhaps you should have adjusted something else?

    Maybe you read that it's best to leave all faders at their "Unity" position, so you decided it's best not to mess with those, and hit the inputs instead? It's actually OK to fudge a BIT on the faders. If you aren't getting enough input level to the board from a mic, perhaps it's time to try another approach?

    Maybe everything else in your mix is too loud, and is what is causing you to turn up the inputs? Maybe lowering all the other stuff, and then turning up the amplifier, or headphone mix, or whatever, would be a better choice? If the inputs are way up on other instruments, and you would have to lower the channel faders to lower their volume, then it may be better to just lower the input levels.

    I believe the best way to do all this is to start each channel out with the input level all the way down, and the channel faders at the "Unity", or "optimal" ...whatever position, and the main out, and subgroup levels (if present and used) the same. THEN bring up the input levels for each instrument/mic until you get a good level. You're probably best off if you don't have to boost the input trim much past about 1/2, if possible.

    It's a juggling act, and I wonder if you aren't doing it all a bit backward.
    From the clues you wrote, and I quoted, it would appear that this may be what's happening, but I'm not positive. Turn up your input trims last when setting levels...they may be responsible for a lot of noise. Perhaps turn DOWN other things so you don't have to turn up your mics so much. You can always amplify the output of the main/headphone mix more...providing you have the power. When you amplify a clean mix, it won't add much noise. When you amplify a noisy mix, the noise just gets louder.

    As I said, I may be wrong, and you may already know all this. I'm just responding to some clues you left that made me suspect the above scenario. And, it may have nothing at all to do with your problem, so take it for what it's worth. :wink:

    Kapt.Krunch
     

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