Screeching noise while DJing

I have a problem with my Numark NS7 II controller. I did a gig 4 months ago and halfway through a screeching noise was coming through the speakers. I sent Serato an email
l detailing what happened and they mentioned that my MacBook Pro was to old and the software hardware didn't work well together because my Mac was a 2009. I recently purchased a 2017 MacBook Pro16 GB memory 2133 MHz LPDDR3. Using Sierra 10.12.6 and the Numark NS7II. Im using Serato ver. Numark firmware 1.9.8. help I have another gig to do at the end of the month.
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  • 1
    Try your latency settings and make sure your firmware I'd up to date
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  • Hi Dexter,

    Thanks for posting. 

    These symptoms usually occur when your computer is not properly optimized. Please review this guide below, which will walk you through how to properly optimize your system:

    Optimizing Your Computer For DJ Performance


    Can you please provide me with the speed of your processor, and what version of Serato DJ are you using? Please also confirm that you've installed the latest drivers for your operating system, which can be downloaded from the product page on www.numark.com

    I would also recommend the following:

    Removing a Device from MIDI Studio (Mac Only)
    1. Open a new finder window and navigate to Applications > Utilities.
    2. Double click Audio MIDI Setup.
    3. Select Window from the top menu and click on Show MIDI Studio is checked.
    4. With the Numark controller disconnected, click the Numark USB Audio Device.
    5. Click Remove Device from the top of the MIDI Studio window.
    6. Under the drop down menu, select New Configuration.
    7. Type of the name of your New Configuration. Ex: Numark Controller.
    8. Reconnect your Numark Controller.
    9. That’s it.

    Lowering the Maximum Screen Updates Per Second & Increasing USB Buffer Size (Both Windows & Mac)
    1. Open Serato DJ.
    2. Click Setup from the top menu.
    3. Click the Library + Display tab
    4. Adjust the Display slider to 20 or 30. If you still experience clicks and pops after setting to 20 UPS try lowering the slider.
    5. Click the Audio tab
    6. Adjust the Audio slider to 10 or 20. If you still experience clicks, pops and dropouts then set your latency settings to 20.
    7. Close the Setup.

    Let me know how this goes. 
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  • I’m frustrated
    Hey Bill, made the adjustments and the problem still exists. I read a post titled "High frequency distortion in NS7 II that was posted back in 2015. This is exactly my issue.
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  • Doublecheck that you've correctly set your master volume in Serato DJ. Refer to this guide here that will walk you through proper gain-staging - Gain Staging 101 - How to get a clean loud signal

    If you're still having issues after this, please get in touch with our Technical Support team by logging on to www.numark.com/support. You can find their contact information on that page. 
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