Found this website: http://www.nu9n.com/tpad-calculator.html
It calculates tpad and hpad. I simulated an hpad with the bridge resistor as a potentiometer with good results. It seems that you can use one h-pad input as + and the other as either - or GND. Lowering the resistance of the bridge resistor lowers the volume.
The next thing I am wondering is what happens to the output impedance when you change the pot value. For example, if the bridge resistor is 1k and output resistors are 1 ohm, what is the real output impedance?
Thanks,
v
It calculates tpad and hpad. I simulated an hpad with the bridge resistor as a potentiometer with good results. It seems that you can use one h-pad input as + and the other as either - or GND. Lowering the resistance of the bridge resistor lowers the volume.
The next thing I am wondering is what happens to the output impedance when you change the pot value. For example, if the bridge resistor is 1k and output resistors are 1 ohm, what is the real output impedance?
Thanks,
v
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