#1
Mkay, well to begin with, I am running a Bugera 333. I am getting some pretty noisy 60hz hum, and I'm running a noise gate. Is this normal for tube amps? My SS amp doesn't make that hum. Any advice?
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#2
Are you using a single-coil equipped guitar? Also try plugging your guitar into a different wall outlet. Could be a grounding problem. Other than that, make sure your noise gate is set properly.

What settings are your amp on?

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#3
The noise gate is set properly, and I'm using an EMG 81/60 combo. It also might help to mention the head is being run into PA speakers. It's not a grounding issue because it doesn't do it to my solid state. I'll try running it through a friend's cabinet and see if it still does it, it could just be the whole PA speaker thing.
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#4
My guess is that its the PA speakers. What resistance are they?

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#5
Im running two of them, each at 8 ohms, so I set the amp to run at 4 ohms.
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#6
EMG's should be really quiet and you shouldn't get much hum, did you install them yourself?
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#7
Well also, if it helps, the hum is only on the lead and crunch channel, and I have the gain dimed on the lead, and about halfway on the crunch. I probably just need to use regular guitar cabinets, Im pretty sure its the PA speakers doing it.
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#8
Quote by Lovecannon
Im running two of them, each at 8 ohms, so I set the amp to run at 4 ohms.


Are they two separate cabs or are they two speakers in one cab?
#9
Two cabs. Each @ 8 ohms so I set the impedance switch to 4. Each with a 15" driver and a horn/tweeter.
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#10
I would NOT dime the gain on the lead channel. That's the same as maxing the gain on a XXX or JSX Ultra channel. Totally unnecessary.
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#11
Quote by Van Noord
I would NOT dime the gain on the lead channel. That's the same as maxing the gain on a XXX or JSX Ultra channel. Totally unnecessary.


+100

dimeing the gain on the lead channel will give you a lot of hum and fuzzy noise. turn down the gain to about 5 and see if the hum is still there. theres a such thing has haveing to much gain, the more gain used, the more noise it produces alot of the time.
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#12
Well if you want a really thick death metal distortion, how would you go about doing that without diming the amp? Just use another distortion pedal or a OD/Boost?
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#13
The 333 should have more than enough gain on tap for thich death metal maybe a clean boost would benefit like a Tubescreamer or a DigiTech Bad Monkey
#14
If you want that much gain, your gonna have to put up with the hum. Still you shouldn't need to dime the gain.
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#15
Quote by jc349
Are you using a single-coil equipped guitar? Also try plugging your guitar into a different wall outlet. Could be a grounding problem. Other than that, make sure your noise gate is set properly.

What settings are your amp on?



I thought you plugged the guitar into the amp


i know what you meant


I'd get an OD pedal there Lovecannon
#16
Just wanted to make sure it was normal on an amp to hum like that at high gain... but if I remember correctly when I first plugged it in and dimed the gain and had the master volume as low as it could go, I dont remember hearing buzzing... then I switched power cables.. which could also be the culprit.. Imma set it up the way I had it when I first tried it. If it still hums oh well. It can always be eq'd/cropped out whenever I go to record. It sounds like 60 cycle hum, so I might try one of those special plugs that you plug an amp into, that's supposed to remove that :\ Maybe a power conditioner?
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Last edited by Lovecannon at Oct 19, 2009,
#18
I know it's not the guitar. I use a noise gate, which removes all the noise from the guitar, and also the pickups are active, so there's not a whole lot of noise to begin with. I'm going to have to check and see it could be the power cable making the noise, because I dont remember any noise when I used the original power cable the amp came with, but it was too short so I had to use a longer cable from my other amp. Ill mess with some settings and see if I can minimize it :\
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#19
Would some ferrite chokes attached to all my cables help with the problem as well?
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Last edited by Lovecannon at Oct 19, 2009,
#20
The original Black and Decker extension cord I was using to power the amp didnt have a ground plug... it seemed quiet through that cord... would the lack of a ground plug reduce noise at the risk of getting IRL banhammered?
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