Question on Surefire EDCL1-T noise

tom1995713 · Jul 21, 2020

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

peter yetman · Jul 22, 2020

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

DayofReckoning · Jul 22, 2020

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

coffeeandlifting · Aug 2, 2020

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.

Question on Surefire EDCL1-T noise

tom1995713

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peter yetman

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DayofReckoning

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coffeeandlifting

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