5k Noise/Hiss AA12

Discussion in 'Discussion' started by dallasjamesproductions, Jun 16, 2019.

  1. dallasjamesproductions

    dallasjamesproductions Member

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    Hey everyone, I'm pretty new around here so bear with me...

    When I record with a high gain setting (specifically strumming power chords - think Green Day or blink-182) I get this really gnarly hiss at 5k and a few other spots. I don't really hear it in real time but it sticks out like all hell when listening back to a recording in my DAW (Studio One). I've tried different all the different output on the AA12 into the line inputs on the back of my interface (PreSonus Firestudio Mobile). I've tried different guitars with different pickups, I've tried different presets, I've tried my own presets, different cab IR's, boost on and off (it does get worse with boost on), ect... I haven't played with any global parameters on the AA12 and I think I'm going to play with the "Roll Off" parameter on the cab block tomorrow.

    Any other ideas or input you all could have for me?

    Thanks!

    --Dallas
     
  2. Dave_5150

    Dave_5150 Senior Member

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    Can you cut those frequencies with a peaking PEQ's with a high Q value (narrow width)?
     
  3. JoeInOttawa

    JoeInOttawa Senior Member

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    I haven't encountered this in my limited recording -- makes me think there's some sort of an incompatibility in your recording signal chain. Any chance you can try a different I/O.

    Disclaimer: I've got hundreds of hours of recording with the unit, but almost all of it is live off the floor at gigs into a Behringer X-Air mixer, so I'm not sure my opinion is helpful here. So YMMV.
     
  4. dallasjamesproductions

    dallasjamesproductions Member

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    I've tried the cutting with the PEQ within the AmplifireEditor software and it didn't help :/

    I'm going to try a different interface, but I can't think of why it would be an issue.

    I'm going to swap out cables as well.
     
  5. JoeInOttawa

    JoeInOttawa Senior Member

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    To be fair, I'm fishing a bit here. But you never know...
     
  6. Jace Nuzback

    Jace Nuzback Senior Member

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    Dallas,
    This could be noise from the USB bus when connected to the editor application.
    When you're recording, unplug the USB cable.
    See if this is the noise you were speaking of and if it goes away.
    If not on the CAB block, lower the ROLLOFF to 7kHz and the PEAK Q to .80.
    Does that help?
    Jace
     
    Matt likes this.
  7. Matt

    Matt Well-Known Member

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    Yep! My AA6 picks up a ton of noise from my laptops USB when both the AA6 and either of my interfaces are plugged in.

    If it is the only USB device it is quiet, and if I unplug the editor when using an interface it is quiet. See the thread on wireless editing for a cool solution.
     
  8. Dave_5150

    Dave_5150 Senior Member

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    That's probably a good indication that the AA isn't the source
     
  9. dallasjamesproductions

    dallasjamesproductions Member

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    Unplugging the USB didn't help and neither did the ROLLOFF to to 7k with the .8 Peak Q :( I'm going to attach some audio files so you guys can hear what I'm talking about (it's in stereo). You'll have two versions of the file: one with EQ and one without. I'm also attaching screenshots of the EQ, CAB block, PEQ 1-2-3 blocks, and AMP block.
     

    Attached Files:

  10. dallasjamesproductions

    dallasjamesproductions Member

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    After trying all that to no avail, I also tried to take the interface out of the picture completely. I went from Guitar to AA12 to Headphones and it was still there. I also tried to go stereo out directly to my monitors and the noise was still there as well. I don't know what else to do
     
  11. dallasjamesproductions

    dallasjamesproductions Member

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    Also, I've noticed that I've been able to pinpoint the frequency in real-time
     
  12. Jace Nuzback

    Jace Nuzback Senior Member

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    This has got to be a power issue then.
    If you're using a power strip, bypass it and go directly to the outlet.
    Try a different outlet.
    Try a different power supply.
    A True Tone 1-Spot is a good choice.
    Do NOT daisy chain with any other pedals.
    Any power supply that meets these specs will do:
    9 or 12 volt power supply (DC or AC, either polarity),
    1A minimum . Accepts a standard 2 .1mm coaxial plug (either polarity) .
    Jace
     
  13. dallasjamesproductions

    dallasjamesproductions Member

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    I've tried different outlet and that didn't work, so I'm going to try the True Tone 1-Spot. I tried to update the firmware as well for shits and giggles. I don't know what else to do. I'm at a total loss... I'm going to get on the phone with support tomorrow and have a chat with them. There's nothing else I can think of that would be on my end. I guess we'll see if the power supply works :/
     
  14. vernset

    vernset Member

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    Last edited: Jun 19, 2019
  15. Jace Nuzback

    Jace Nuzback Senior Member

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    I'm very sorry if I missed your E-mail.
    From the forum posts it looks like everything is under control.
    If you still need help please write me another E-mail to support@atomicamps.com
    Cheers,
    Jace
     
  16. dallasjamesproductions

    dallasjamesproductions Member

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    For those of you following this and for documentation: the 1-Spot power supply DID NOT fix or alleviate the issue.
     
  17. Matt

    Matt Well-Known Member

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    Have you tried in a different building (different power/interference)? How about a different laptop and interface?
     
  18. dallasjamesproductions

    dallasjamesproductions Member

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    I've tried it in three different buildings, with two different computers, and two different interfaces
     
  19. Dave_5150

    Dave_5150 Senior Member

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    Looks like youre using one of Leon Todd's IR's? Do other IR's produce the same issue?
    .
    He usually notes that IR has a nasty spike around where you mention youre hearing one in his videos. You also have your cab roll off set a little brighter (0.8) than his usual setting (0.7) with that same cab.
     
  20. Dave_5150

    Dave_5150 Senior Member

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    He also sets his PEQ cut freqequency a little higher than you have and sets his Q to cover a lttle wider range so you may be missing some of the nasty area of the IR with your current cut settings.
     

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