• 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.

Dummy load for bench testing tube pre.

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wanders

Member
Joined 2011
I just finished building a line level, unbalanced, stereo preamp which performs well for about 10 minutes then begins to develop hum and noise as it warms up.

I want to bench test without hooking up to an amp & speakers. How would I assemble and hook up a dummy load to handle the output?

Thanks
 
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