Bruel And Kjaer 2238 Mediator User Manual
Interesting that you have that meter and yet are asking this question. Got a manual? The Aux 1 output provides a range-adjusted, unweighted or weighted AC signal from the mic, 1V full scale, basically line level. The mic, being it's a B&K and all, should be pretty flat.
If you don't mind the somewhat cumbersome instrument, and the somewhat odd Lemo connector used for the Aux 1 output, there are several advantages to using it as your mic. First, it's flat, wouldn't require a mic cal file. Second, the preamp in the meter is pretty quiet, so the weighted noise floor is 14dBA, and it would take some doing to achieve that with an inexpensive mic and your preamps. But the big advantage is, the thing is already calibrated, so you have absolute SPL done for you. The only disadvantage I see is the connector and the physical size of the unit.
It probably has a 1/4-20 thread tripod mount too, right? I can tell you this: I too have a 2238 BK and in comparison with the ECM 8000 connected to a M Audio Fast Track Ultra, on Leq (A) measurement, I found a difference of about 1 dB. The ECM was calibrated with the BK calibrator 4231, the same on the SLM. Assistir a nova super maquina 1 temporada dublado online gratis. So, if you need a precision measurement, is better to use the BK mediator, with the output Aux1. When the anecoic room of the research insyitute where I work (INRIM, Turin, Italy) wil be free (now is used for different measurement), i plan th calibrate the ECM on frequency response in comparison with the our BK national standard microphones (BK, of course, calibrated on 0.02 dB).Best regards. Password Please enter a password for your user account.
Bruel & Kjaer 4294
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