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Many makers, including Primo, quote a S/N wrt to 1 Pascal; 94dB spl. So 70dBA S/N would be 94-70 = 24dBA ie spl A wtd.My $0.02 is that if the noise is below 20dBA spl, you really need to listen to the noise and/or do spectral analysis.The dominant noise for capacitor mikes in an A wtd measurement is the 1G/capsule capacitance noise which is 'reddish'. But this sounds just like ambient noise in a quiet studio so usually not a problem. The most irritating noise is 'white'; electrical noise and the resistive damping in the capsule.That's not to say the 1G/capsule noise isn't detrimental. I hear it as ambient sounds are 'thick' ... rather than noisy.If you want a really cheapo but quiet omni, have a look at a PUI 5024 capsule in one of my SimpleP48 circuits This doesn't give away anything to more complex stuff except high spl overload level.
Many makers, including Primo, quote a S/N wrt to 1 Pascal; 94dB spl. So 70dBA S/N would be 94-70 = 24dBA ie spl A wtd.
My $0.02 is that if the noise is below 20dBA spl, you really need to listen to the noise and/or do spectral analysis.
The dominant noise for capacitor mikes in an A wtd measurement is the 1G/capsule capacitance noise which is 'reddish'. But this sounds just like ambient noise in a quiet studio so usually not a problem. The most irritating noise is 'white'; electrical noise and the resistive damping in the capsule.
That's not to say the 1G/capsule noise isn't detrimental. I hear it as ambient sounds are 'thick' ... rather than noisy.
If you want a really cheapo but quiet omni, have a look at a PUI 5024 capsule in one of my SimpleP48 circuits This doesn't give away anything to more complex stuff except high spl overload level.
