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RE: Do you hear that sound? noisy FCB 1010!

Title: RE: Do you hear that sound? noisy FCB 1010!

>>i got the exact US fuse specified by behringer but...in the UK the pedal is quiet. in the US the pedal has a hum!<<

[adopts metaphorical white lab coat & clears throat]
well, this would probably be explained by mechanical resonance occuring within the windings of the transformer & out through the cheap nasty mounting of same.

at 50Hz, the structure is damping this resonance sufficiently that it doesn't make too much noise, but at 60Hz, the whole assembly is vibrating in perfect sympathy with the coils of wire in the trafo. same principle, essentially, but sort of in reverse, that causes loose windings in pickups to squeal with out-of-control feedback, & has hundreds of guitar techs melting candles over ancient p90s....

[takes white coat off again, revealing beastie boys t-shirt]
uli was too cheap to use a toroidal, I guess....  I bet some rubber solution adhesive would shut it up.....

d.



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