Gear / Technical Help > Recording Gear
Zoom F3
voltronic:
--- Quote from: Gutbucket on September 14, 2023, 03:12:02 PM ---
--- Quote from: jielkade on September 12, 2023, 03:25:27 AM ---I dream of a neutral preamp set with a pair of digital microphones with as little color as possible - Sonosax plus Neumann D? but that's off topic, sorry.
--- End quote ---
No analog preamp needed (or possible) with a digital microphone. Conversion from analog to digital is happening inside the microphone prior to output.
--- End quote ---
I always wondered why AES42 never became widely used. Only a few mic and field recorders still have models that use it.
Gutbucket:
--- Quote from: voltronic on September 14, 2023, 06:57:29 PM ---
--- Quote from: Gutbucket on September 14, 2023, 03:08:12 PM ---Happy to help!
--- Quote from: Gutbucket on September 13, 2023, 12:56:33 PM ---..it can be hard to discern by listening if the noisefloor of the recording is being dominated by the noisefloor of the room (HVAC), the self-noise of the mics, or the noisefloor of the F3 input preamp stage. But from experience, I expect them to range from highest to lowest level in that order.
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There should be sufficient data below to figure out the comparative noise floors of each. Specs as reported by the manufacturers:
Zoom's F3 EIN : -127 dBu or less (IHF-A) when waveform magnification is ×1024 with 150 Ω input (< not sure why the part I've bolded here is relevant)
Input impedance, MIC: 3 kΩ or more
Input impedance, LINE: 3 kΩ or more
Maximum input level, MIC: +4 dBu
Maximum input level, LINE: +24 dBu
DPA's MMA6000 EIN :
At 0 dB gain<3 µV (RMS A-weight)
At 37 dB gain<1,5 µV (RMS A-weight)
DPA's 4061 (legacy and CORE) :
Sensitivity, nominal, ±3 dB at 1 kHz 6 mV/Pa; -44 dB re. 1 V/Pa
Equivalent noise level, A-weighted Typ. 26 dB(A) re. 20 µPa (max. 28 dB(A))
Equivalent noise level, ITU-R BS.468-4 Typ. 38 dB (max. 40 dB)
Distortion, THD < 1% - Legacy 120 dB SPL RMS, 123 dB SPL peak
Distortion, THD < 1% - CORE 134 dB SPL RMS, 137 dB SPL peak
Dynamic range - Legacy Typ. 97 dB
Dynamic range - CORE Typ. 111 dB
Max. SPL, THD 10% 144 dB SPL peak
--- End quote ---
I think you forgot to include the EIN specs of the MMA6000.
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It's there [I've now bolded it in the quote above], but is in µV rather than dBu.. and A-weighted.
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