#2
You're gonna have to be more specific or record clips, because I have no idea what you're talking about.
I don't give a shit if you listen to me or not
#3
The only thing I have is a crappy computer mic that doesn't pick up music well, so I'll try describing it better. There's a LOT of hum, and it sounds like a blowtorch if you listen closely. Is that just the tubes? Or do I need to attempt recording a sound clip to help you guys understand the problem better?
#5
Yeah, the manual says to let them warm up for about 30 seconds. Do I need to for longer?

Also, even though my volume is between 1 and 2 on all knobs, there is no hum on the overdrive channel, but there is on cleans. Don't know if volume makes a difference.

EDIT: Also, do I have to wait for the tubes to cool back down before I turn it completely off?
Last edited by -Blue- at Oct 30, 2008,
#6
That's strange, and no, no need to let them cool down, even when the amp is in standby the heater filament is still one.
I don't give a shit if you listen to me or not
#7
That sounds about the opposite from usual. Normally there is some noise on the gain side and not on the cleans. I didn't try the 33 though, just the 18 and 50 but I would think they would be very similar.
I wondered why the frisbee was getting bigger, then it hit me.
#8
Huh. I went to record a sound clip, and...

1) The problem's still there. And,
2) It now makes a strange sound when I flip to the overdrive channel, and a quieter sound when I switch back.

There's some hum in the background just because of my computer mic, but you'll be able to tell when I turn the amp on and its sound. It doesn't sound quite like it does in real life, but maybe close enough to come to a conclusion? Also, its size is due to me not compressing the sound file, because I thought it might hide the sound.

http://www.tempfiles.net/download/200810/22479/amp-hum.html
#9
Sounds like a bad ground, can you try a different outlet somewhere else in the house?
I don't give a shit if you listen to me or not
#11
Try in another room on the opposite side of the residence.
I wondered why the frisbee was getting bigger, then it hit me.
#13
^Could be your whole house isn't grounded properly.
I don't give a shit if you listen to me or not
#15
Have an electrician check it out. Conversely, you could take it to a shop and see if they'll give it a quick look and let you plug the amp into a properly grounded outlet.
I don't give a shit if you listen to me or not
#17
No, but I thought both channels sounded equally noisy, though I was only hearing a clip.
I don't give a shit if you listen to me or not
#18
Oh. My parents say the house is, in fact, properly grounded, and that the hum is nothing to really worry about, it's just amplified noise. My dad has used a tube amp before, so I'm assuming he would know. Maybe replacing the preamp tubes would cut down on it, though? Are those the ones that create noise?