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Thread: Question on Surefire EDCL1-T noise

  1. #1
    Unenlightened
    Join Date
    Jul 2020
    Posts
    1

    Default Question on Surefire EDCL1-T noise

    Hey everyone!
    I bought SF EDCL1-T a few days ago.
    This is satisfying to me, I found one small problem.
    When I operate this in high mode near my ears, the a little bit buzzing sounds in my ears.

    I wonder if the other users are the same.

    Thank you

  2. #2
    peter yetman's Avatar
    Join Date
    Mar 2014
    Location
    North Norfolk UK
    Posts
    4,964

    Default Re: Question on Surefire EDCL1-T noise

    It's the inductor on the driver board vibrating at a high frequency.
    It shouldn't happen in a quality driver, but it's quite common.
    P
    "O frabjous day! Callooh! Callay!" He chortled in his joy.

  3. #3
    Flashaholic*
    Join Date
    May 2018
    Location
    USA
    Posts
    561

    Default Re: Question on Surefire EDCL1-T noise

    It's normal, almost every two stage tailcap from Surefire I've had has made this buzzing (K2 was quiet, L2 was LOUD).

  4. #4

    Default Re: Question on Surefire EDCL1-T noise

    Mine makes a slight noise that I only notice if I'm in a very quiet place... never worried about it. Most newer lights that run on 1xCR123 make some noise IME. I think it has something to do with boost drivers, because my 2x and 3x lights are completely silent when in regulated runtime.

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