• 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.

knight KG-240? low output help

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imfree707

imfree707

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Joined 2010
Rectifier?

rdshear said:
I just purchased (over the weekend) what appears to be either a home-made copy of the KM-15 or one that was placed in a home-made chassis. I'm still waiting it's arrival in the mail, but I have the photo's from ebay. One thing interesting to me is that the amp is coming from the Chicago area... the old home of allied from what I've read.

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I think I see a rectifier diode between the rectifier tube socket and the can-type filter cap. Your amp may have been modded to solid state rectification and not even use a tube any more. Solid state diodes will cause the B voltages to be high, unless extra compensating resistors have been installed.
 
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