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Rick Ruskin[_2_] Rick Ruskin[_2_] is offline
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Default Input transformer for Spectra Sonics 101 preamp

On Thu, 28 Nov 2019 16:20:10 -0800 (PST), Phil Allison
wrote:

Rick Ruskin wrote:

-------------------


No, because the input impedance on those is already 600 ohms. It is
dominated by the emitter resistor on Q1. If you put a step-up transformer
on there, you get an even lower input impedance which is probably not
what you want.

There's no free gain to be had here.




The current version of these units state 64db of gain with the same
101 card.



** Bull****, it ain't the same card.


You know this for a fact or are you making an assumption?

An input tranny that gave 10dB more gain would reduce the impedance to 60 ohms. Way to low for any modern mic.


Ok. That's an answer I can understand.


You won't take no for an answer - will you ?


I'm merely asking for info and advice. You can take the snarkiness
and shove it up your ass.

RR