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Amp buzzes with one bass but not the other???


LemonCello
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  • 1 month later...

Give the jack plug a good clean and the guitar socket as well, if possible. Could be that you're not getting a good earth connection between the two.

The tip (and ring, where used) connections in a jack plug/socket are spring-loaded, so there is a 'positive' connection. The sleeve connection usually just relies on the sleeve of the plug laying in contact with the barrel of the socket, which doesn't give such a 'positive' connection, especially if the socket hole is near the top end of the diameter tolerance.

Try applying some sideways force to the jack plug when it's in the socket and wiggle it a bit to break through any surface grime. No guarantees, but it's an easy thing to try and might reveal a problem.

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Does it do it everywhere, or just in one room ?

Have you got dimmer switches fitted to the lights ? is it less of a problem with the lights off ? Triac dimmers alter the shape of the mains waveform, and the resulting sharp edge seems to radiate. More a buzz than a hum.

My Mex Precision with USA pups does it in my house, but my Bitsa Precision with Kent Armstrongs doesnt, both wired identically so it strikes me that reckon some pickups are better than others at rejecting hum.

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Thanks for all your comments chaps. Haven't got dimmer switches on lights and it does sounds like a dodgy solder somewhere. The Amp is an old Peavey 300, but it doesn't buzz with my new VMJ.

I think I'll be in the market soon anway for a new(er) and light(er) Amp than the Peavey. Still waiting for my Roger Waters P to arrive. :)

Thanks Again

LC

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