WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
Building, troubleshooting and testing of these amplifiers should only be
performed by someone who is thoroughly familiar with
the safety precautions around high voltages.
Is it possible to obtain a 12dB low-pass filter properly adjusting the characteristics of plate choke and/or those of cathode resistor in a driver stage employing a 6C45P (receiving an input signal of about 2-3 volt)?