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Post subject: help reducing amp hum
Posted: Sun Dec 28, 2008 9:31 am
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Joined: Sun Sep 28, 2008 3:29 pm
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Location: Lee, MA
guitar. I tried running the power from a seperate outlet because that worked before when id run a loop station. It helped, but not much. Any usefull suggestions? BTW, not that it means anything, but its a cheapy Digitech RM 250.So I'm using a vibro champ for home practice. I'm getting a terrible hum, especially when running through a multi effects pedal. I own a reissue Princeton reverb too, but I leave that elsewhere for practice with a band I jam with (way too loud for home) and I don't get as bad a hum. I know I need to shield my current guitat, but its not that hum. I only use the pedal for home, I know its from that because it only makes the noise when I plug that in, even without the hum


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Posted: Sun Dec 28, 2008 11:15 am
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Have you tried other cables? Also try cleaning the plugs and sockets on the pedal. They maybe dirty, that can cause noise and scratchiness.

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Posted: Sun Dec 28, 2008 4:12 pm
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Try using a UPS for your amp.... a UPS is a little box that has current sockets just like on the walls but the difference is that the UPS is perfectly grounded and it doesnt have hum at all... I use one for my amps, effects processors and everything sound related because it just doesnt have hum therefore nothing hums :)


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Posted: Sun Dec 28, 2008 7:27 pm
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Hard to say without being there with you and testing out things. Some things I'd look at if I were sitting there...

- make sure the amp, and the wall outlet, are properly grounded
- make sure there are no flourescent lights making that buzz
- make sure you're not sitting in front of your amp with the gain up, volume up, guitar volume wide open, not playing anything, and expecting to hear dead silence
- make sure you have quality pickups on it, whether single coil or humbucker
- make sure you have quality cables
- make sure you don't have some goofy pedal chain messing it up
- make sure you don't have some $1 patch cables messing it up
- make sure your guitar is properly shielded
- make sure you have all your connected gear into one outlet, and that it's properly grounded
- make sure you're not sitting in front of this computer monitor trying to get a dead-quiet signal

... some things which I'm sure you've looked at already. If not, run through that list for starters...


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Posted: Mon Dec 29, 2008 6:50 pm
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All of the above are good places to look, Also not only could it be a bad or missing ground on the outlet your using, but any other outlet in that circuit as well as appliances that are on that same circuit ( breaker). Even a ground not connected when outlets are wired from one to another. Wiring in old homes didn't even use a ground, just a hot and a nuetral.


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