DC pro X anr, constant bip

[stoneangel]

Hello guys,

I have just bought this headset, and I always hear a bip (low frequency), like biiip.....biiiiip..... on the right side.
If I turn my head to the right, this sound stops.It comes back when I turn back my head. It is not a loud sound, just low, but I just focus on it, it bothers a bit after hours.

I figured out that the lenght of this bip depends on how we set the engine power (jet).

Question : do you or did you have this same thing ? is it normal for an ANR headset ? (first experience for me)

Thanks for your inputs!
Best regards