[sdiy] Humming noise in JH reverb circuit

Michael Zacherl sdiy-mz01 at blauwurf.info
Wed Oct 3 09:43:53 CEST 2012

On 3.10.2012, at 09:26 , ganesha wrote:

> The reverbtank and the pcb are approx 30cm from the transformer, but if the transformer would be the cause, wouldn't  the hum be always present? Now it only hums when the mix pot is set to wet signal, and it doesn't matter if the reverbtank is connected to the pcb or not.

I don't know the circuit, but hasn't the "wet" part of the circuit got a higher gain? So it would amplify any electrical noise more than the dry path.

hear the colours of noise: http://blauwurf.at

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