J
J, David
- Jan 1, 1970
- 0
I come back from my previous post about this kind of stereo expander.
I am analysing the so called "deluxe version" available at this link:
http://sound.westhost.com/project21.htm
Let's say I'm only interested by applying negative feedback, no positive
feedback. This means I replace both 10K potentiometers with 5K
potentiometers, both in series with a 5K resistor so I can tap only the
negative feedback.
I assume the potentiometer are linear type in these examples. But are they?
When 100% negative feedback is applied, no monophonic in-phase signal got
through. As less negative feedback is applied by slowly turning up the pots,
the monophonic signal will gradually get stronger.
So, should the negative feedback not be controlled by logarithmic
potentiometers instead?
J. David
I am analysing the so called "deluxe version" available at this link:
http://sound.westhost.com/project21.htm
Let's say I'm only interested by applying negative feedback, no positive
feedback. This means I replace both 10K potentiometers with 5K
potentiometers, both in series with a 5K resistor so I can tap only the
negative feedback.
I assume the potentiometer are linear type in these examples. But are they?
When 100% negative feedback is applied, no monophonic in-phase signal got
through. As less negative feedback is applied by slowly turning up the pots,
the monophonic signal will gradually get stronger.
So, should the negative feedback not be controlled by logarithmic
potentiometers instead?
J. David