Tinkerer
100+ Head-Fier
- Joined
- Apr 22, 2015
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My backup earspeakers are a pair each of SR Lambda Signature and SR Lambda Nova Signature which I use with my BHSE. The older "plain" Lambda's occasionally produce very low level "hash", which I can *not* hear when music is playing, but generally hear only when music is not playing. The volume of the hash does not change with changes of the input selector or volume control. The hash is not there when the earspeakers are not plugged in. (I.e., it is not some sort of mechanical noise, like from the cable rubbing on something.) I can kind of simulate the hash by putting my upper teeth lightly against my lower lip and gently sucking in air through my mouth, so sort of a buzzing, and very intermittent. Does anyone know what this might be and/or how to fix it?
Sounds like could be a rare legitimate dust problem. But if it's the same volume in both channels then more likely just some slight background noise in the amp itself. If you're using a single ended input, maybe try a simple ground lifter of low ohm power resistor +tiny cap in parallel.
I did have a similar problem with my old Lamba Spirit once and it was because the internal foam was disintegrating and sticking to the dust shield making weird intermittent buzzes every once in awhile. After I opened it up and cleaned out all the old foam, never had that problem again.