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microphone self-noise, Sennheiser ME67 vs MKH70

Subject: microphone self-noise, Sennheiser ME67 vs MKH70
From: "feith" <>
Date: Mon, 16 Feb 2004 21:35:56 -0000
Greetings-
I currently use a Sennheiser K6-ME67 long shotgun microphone and I'm 
mosly pleased with it. Its self-noise is rated at 10 dBA. 
Senheisser's MKH70 noise floor is rated at 5 dBA. Does anybody have 
recordings done with these 2 microphones of the exact same source in 
a super-quiet environment? I'd like to match the levels and hear what 
the microphone self-noise sounds like in both mikes (one costing 
$500, the other $2000...is a 5dBA noise difference worth $1500?). I 
think microphone companies should publish WAV recordings of the self-
noise of their mikes while capturing a pre-determined, normalized SPL 
sound. The self-noise specs don't tell you the frequency spectrum of 
the mike's noise (i.e. a single self-noise dB value is not very 
useful - anybody from Sennheiser listening?).

I am also curious about the Neumann KMR82i- anybody prefer it to the 
MKH70? Anybody in the Madison, Wisconsin area have fancy shotgun 
mikes that I could test-drive? 

I know that 80% of the time other background noise such as leaves 
rustling or a road 1 mile away will often be much louder than the 
mike's self-noise.  But I can be a lazy sound recordist and am often 
much more than 30 feet away from a singing bird- it would be nice to 
be able to record distant sounds without microphone noise in those 
rare windless and quiet conditions sound recordists dream of.

thanks,

John Feith
Madison, WI
Bird Song Ear Training Guide CD
Who Cooks for Poor Sam Peabody?
www.caculo.com/birdsongs





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