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Dan Wake

Which is it the Rode NT-SF1 dBA selfnoise?

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Hi, I wish to ask you which is it the self noise value in dBA for the Rode NT-SF1?

because everywhere if you search on google it say it's 15dBA self noise. for example here: https://www.thomann.de/gb/rode_nt_sf1.htm?ref=intl&shp=eyJjb3VudHJ5IjoiZ2IiLCJjdXJyZW5jeSI6IjQiLCJsYW5ndWFnZSI6ImVuIn0=

Maybe this explains more but I didn't understood it https://www.soundonsound.com/reviews/rode-nt-sf1

 

 

Now if you look on Rode website https://it.rode.com/ntsf1
here it say Equivalent Noise (A-weighted)17 dB SPL (as per IEC651)

maybe 15dBA correspond to "17 dB SPL (as per IEC651)"? so it's 15dBA? 

thx

 

p.s.

 

I'm undecided if to buy the Rode NT-SF1 or four matched Primo EM272 mic capsules and arrange some kind of DIY ambisonic (or just "dolby like") kit for field recording. Primo capsules are listed to be 14dBA of self noise. I needs to record field recording for documetaries I need quiet microphones for certain ambients. In the Rode NT-SF1 is 15dBA, it's one decibel more but I will buy it over Primo solution. but 14 vs 17 is 4 decibels starts to be a difference.

 

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The equivalent noise is the noise that remains when the stimulus of 1Pa (94dB SPL) is removed, if you calibrate the mic so that this stimulus gives you 94dB in a meter, what you have left when you remove it is the equivalent noise. 

 

A-weighting, it is the same (invert) as the 40phon isophonic curve, not take so much account of the bass and treble (Better figure as the unweighting)

 

IMMO this figures are of one capsule. +6dB of noise in the W channel (all capsules), but +12 dB of sensibility

 

If you need quieter microphones go to a more professional solution such as the Soundfield SPS200

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I would be more concerned with preamp noise than a few dB of mic self noise. Rode NT-SF1 specs state 30mV output which ain't bad and should help keep preamp noise low unless one is using a POS H-series Zoom,

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Case closed: I contacted Rode they told me the NT-FS1 has been measured to have 17dBA of self noise. Thommann and other websites info that says it’s 15dBA they are all wrong. Thomann say they will update the informations.

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On 7/30/2020 at 12:56 AM, Dan Wake said:

Case closed: I contacted Rode they told me the NT-FS1 has been measured to have 17dBA of self noise. Thommann and other websites info that says it’s 15dBA they are all wrong. Thomann say they will update the informations.

 

I found the NT -FS1 noiser than the SPS200, but less than the Ambeo 

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