Re: 8020s are all right with me!

[madl74]

> I just picked up a used pair of 8020s, they are en route as I write this =
(WooHooo!)
> ...
>  Any suggestions on what to look and listen for to see if mine has the no=
ise issue would be appreciated.


Jason,

I'm assuming that you have an input stage which is quieter than the mics.
Try my pile of bedclothes test. You will get LF house noises (I found 50 Hz=

acoustic mains hum from the house wiring vibrating) so use a bass rolloff.=


Look at a spectrogram of a quiet bit when you're not breathing. I use the
Audacity editor. With my older Sennheisers, I see an HF tip-up at the top
end which is probably thermal noise from the air. If you see this, it is
probably the irreducible thermal noise from the air, but it does give you a=

comparison between mics.

David Brinicombe