Home › Forums › Design and Building › 2 Stroke Amplifier Design and Building › Squeal and hum on 2stroke › Re: Re: Squeal and hum on 2stroke

January 24, 2013 at 10:59 pm #5765
beelzebum
Participant

If you are reading your negative feedback resistor in circuit, then it is probably fine. In reality you are reading that resistor in parallel with the 1.5k next to it, since the OT secondary and the cathode resistor are both connected to ground. If you are unsure, then you can remove it from the circuit and then test it.
I was also wondering which brand of output transformer you are using, and which color secondary leads you are using because different companies use different colors.