Hullo folks,
now that the weather has taken a less belligerent posture, I finally dusted off my lightly used HE400se after being stuck with TWS buds for months.
Unfortunately the left driver seems to have developed a nasty 'resonance' in the high-bass region, roughly speaking.
This can be reproduced reliably by listening to
The Smile's Tiny Desk Concert (<<< you can click that <<<) on NPR's official YouTube Channel, the resonance-slash-distortion appears on some of the lower notes from Yorke's piano on Pana-vision, e.g. around the 15s and 28s mark.
The issue is relatively rare so far, however it also emerges within the first 30 seconds of
We Just Found Out She Died from Mary Lattimore's Collected Pieces (CD Rip stored as FLAC - try it if Twin Peaks meets harpist sounds appealing), and probably elsewhere.
I gave a few turns to the screws under the left pad, and this seems to have reduced the problem, but I'm wary of going further, out of a slight fear of stripping the threads.
Is this the dreaded 'left driver rattling' and can it be cured somehow? Is it return time already?