Re: Re: SP-Gigatracker self-noise

["Bruce Wilson" <>]

> I estimate the EIN for the HiMD mic pres between -125dBu and -128dBu.
> For reference, this is almost quiet enough to amplify the signals
> from Rode NT1-A's (6dBA self-noise) without adding noise.  (I hear
> the noise to be about 50% from the NT1-A mics and 50% from the HiMD
> pre).

Dead on for low sensitivity (you are using a NHF900 as I recall, and it may=

have a better preamp than my NHF800), but how are you getting 48v mics to
work with a 1.5v PIP minidisk? Are you using just a phantom power box, or a=

preamp (I think I recall that you have a Rolls preamp)? If it's a preamp,
then your estimation is for the preamp stage, not the minidisk.

Bruce




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