humming

[crisis]

I have a Single Recto which I use only for jamming and gigs, not for home practice normally. I set it up today because I was home by myself and noticed a slight transformer hum. I have never heard it jamming or gigging as there is too much noise in those cases.
I think it is from the output trannie. Is this normal?

 

[MusicManJP6]

If you are sitting too close to the amp (and the transformer) then you'll hear trasnformer noise that is picked up by the guitar. This is common in home situations where you are sitting right in front of the amp. If you turn your guitar volume down and the noise ceases and then you can back away from the amp and turn the volume up and not hear the noise then your prob just too close to the amp... make sense?

 

[crisis]

yeah but nah. I was sitting over the other side of the room. It was quiet in the house so I could hear a slight noise. I'm not sure if it was increased as I moved closer but it was there anyway.

 

[insideout]

Did you change preamp tubes on it at some point? Make sure you don't have Russian tubes in V3 or V4 because it will give your amp fits. Even if it's a Mesa tube, if it's not Chinese in 3 &4, your amp will buzz.

I was having volume issues when I put Tung Sol's in 1-3. I read the thread below which lead me to pull the Tung Sol out of V3 and put a stock mesa tube back in. I didn't even think to look at the tube because I knew it was good. The volume problem went away, but my amp started to buzz. As I was problem solving I realized that the stock mesa tube I put back in V3 was made in Russia. Once I swapped things around and got Chinese mesa's in V3 and V4, my amp is quiet and purring like an angry dragon!

http://forum.grailtone.com/viewtopic.php?t=25102&postdays=0&postorder=asc&start=15

 

[MusicManJP6]

Are there any computers, TVs, microwaves, washer, dryer, A/C, etc on the same circuit as the outlet you are plugged up to? Could be noisy power...

 

[crisis]

Its not out the speakers (there is some there but what i a am talking about is from the amp) I haven't touched the tubes but I bought it second hand so who knows. Anyway it is a transformer hum not from the speakers.

 

[155]

its the wiring in the house most likely, just deal

 

[nemesys]

I played in a place that caused my amp's transformer to do that. Out of curiosity, I put a scope on an outlet, and found that the power was really dirty -- not even a sine wave. It didn't seem to affect anything else in the amp (the rectifier and filter caps should be able to handle something like that, especially in an overbuilt amp like a Mesa), and it actually sounded better than it ever has.

 

[nitrous2400]

you can try one of two things invest in a furman or monster power conditioner, these can do alot when it comes to dirty power situations. I remember a studio i went to last year was absolutely horrible, I had so much noise, and i was running my decimator and there was no change at all, it took me bringin in the furman to the studio to get things under control. The other possiblity is to change outlets. sometimes you can be on the same circuit as a tv set in another room or appliances on a different floor, and these will create noise and or hum in the amp or thru the speakers, and it become increasingly more apparent if u run hot pickups and an overdrive. If its not really that bad I'd just say deal with it especially if you dont normally play at home with your rig

 

[crisis]

you can try one of two things invest in a furman or monster power conditioner, these can do alot when it comes to dirty power situations. I remember a studio i went to last year was absolutely horrible, I had so much noise, and i was running my decimator and there was no change at all, it took me bringin in the furman to the studio to get things under control. The other possiblity is to change outlets. sometimes you can be on the same circuit as a tv set in another room or appliances on a different floor, and these will create noise and or hum in the amp or thru the speakers, and it become increasingly more apparent if u run hot pickups and an overdrive. If its not really that bad I'd just say deal with it especially if you dont normally play at home with your rig

For sure. The hum wasn't a problem as long as it want the sign of some problem with the transformer. Humming transformers can be bad news
in some cases but this is slight. and yep I don't use it here at home so no drama really.