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Posted to rec.audio.tech,sci.electronics.components,sci.electronics.repair,sci.electronics.basics
Phil Allison
 
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Default Is my LT44 transformer suitable for audio (de)coupling?


"Don Pearce"


One more thing - the Neve mic pre has a pretty poor noise performance.
At -128dBu equivalent at the input, that is about 6dB above pure
thermal noise.



** Absolute bull****.

Thermal noise in a 20kHz BW and 150 ohms

= 0.22 uV or -130.9 dBu.


That is 4 or 5 dB more noise than they should be
achieving.



** Wrong, it is a little over 2 dB.

Get you calcs right - dickhead.

( You forgot to allow for the 0.775 volts bit. )


BTW

This is what Rupert has to say on the matter:

http://www.rupertneve.com/notes_mic.html

http://www.rupertneve.com/notes_noise.html


NOTE

his comments re 1000 to 1200 ohms input load being "normal".




........... Phil