Dan Wake Posted July 21, 2020 Report Share Posted July 21, 2020 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. Quote Link to comment Share on other sites More sharing options...
ramallo Posted July 21, 2020 Report Share Posted July 21, 2020 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 Quote Link to comment Share on other sites More sharing options...
Rick Reineke Posted July 21, 2020 Report Share Posted July 21, 2020 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, Quote Link to comment Share on other sites More sharing options...
Dan Wake Posted July 29, 2020 Author Report Share Posted July 29, 2020 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. Quote Link to comment Share on other sites More sharing options...
ramallo Posted July 30, 2020 Report Share Posted July 30, 2020 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 Quote Link to comment Share on other sites More sharing options...
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