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Topic: amplifier hum |
Gene E. Jones
From:
Texas, USA
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Posted 15 Dec 2005 4:09 pm |
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| I have a nashville 400 amp and a mci d-10 steel. IF i flip the ground switch to the negative [down] then i have much less hum, way worse if the switch is positive or neutral. Can i do something to make it hum less? If you are on stage is the hum much of a problem? In general i do not think i have ever been bothered with it when i am playing in a band, but just if I am practicing at home. suggestions?thanks, gene |
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Jack Stoner
From:
Kansas City, MO
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Posted 15 Dec 2005 4:12 pm
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Does it hum with nothing plugged into it? or does it only do it with something plugged in?
If it does it with nothing plugged in, turn the reverb off (to zero) and see if still hums. If that fixes it, most likely there is a bad connection in the "molex" connector for the reverb that plugs into the chassis. Many times just unplugging that connector and then plugging it back in will "clean" the contacts.
If it's not the reverb then it may be bad power supplyu filter capacitors and a trip to the shop is needed (or better yet shipped to Peavey for repair).
If the hum is external to the amp, it could be a cable, it could be the pickups if they are not hum buckers, etc. |
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Ray Montee
From:
Portland, Oregon (deceased)
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Posted 15 Dec 2005 5:33 pm
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| Excessive VOLUME on the amp along with too much presence and loads of volume on the guitar can produce a similar affect. Sometimes with feet on a cement floor or dampened wooden deck floating on a small lake in Kelso, Washington, can cause a similar affect as well as playing on the steel decking and gally benches on an ocean going Hawaiian tugboat name "O-NO" in the Columbia River. |
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Jeff Hyman
From:
West Virginia, USA
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b0b
From:
Cloverdale, CA, USA
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Posted 16 Dec 2005 3:08 pm
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| Moved to "Electronics" section of the Forum. |
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