• 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.

NFB, how to implement here?

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disco

disco

Member
Joined 2006
My 6L6 push pull amplifier is in need of some help in the low frequencies. Because gain is more than enough I was thinking of the implementation of negative feedback.

I don't recall the origin of the fase splitter (see below) but I'm scratching my head how to implement. The output transformer has a 500 ohm tab (besides 4, 8 and 16 ohm) which could be fed back over a resistor to the kathode of V1. Any suggestions?

Thank you.
 

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