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In the Forum: Analog Playback
In the Thread: The last phonocorrector: “End of Life" Phonostage
Post Subject: It was 13 years back...Posted by Romy the Cat on: 3/17/2020
Yes, of cause I have experimented with the resistors quality. The way how the resistor
is used in the feedback loop in my view make is less relevant. The feedback resistor
is applied to high impedance source that make less signal to flow other the resistor.
Also it is shunt resistor… The idea to use the “purest caps possible” come from
the fact the in a capacitor the repolarization of dialectic is a problem and
each dialectic has own residual polarization and own sonic signature. In some
cases it is not important and the dialectic is full biased with DC voltage. In coupling
caps for instance while the stage in class A1. In feedback there is no DC bias
and AC constantly repolarize the feedback caps. Them then to repolarize air instead
of a dielectric.
The loading R3 resistor is
super critical for sound, so the cathode restores. I did not experimented
with the resistors quality in this
given feedback. Any resistor that you trust should go well in this application.
I think I used Dale RN-55 or 60. I do not know how they are nowadays. The quality
of those things is going up and down and what I did was 13 years back… I heard
that some brands that I used to know and tested by me went down sound-wise very
dramatically. So, I do not know what is going on now out there…Rerurn to Romy the Cat's Site