do all amps just hum pretty loud when at 10?
do all amps just hum pretty loud when at 10?
or, more specifically, would modding a 3-pin amp to be ground lifted be a bad idea to get rid of hum?
i have a fender bassmaster, and i use it all the time at 10, cause it breaks up so nice. i just recapped it hoping to get rid of the ground hum/noise when its at 10, but its still pretty noticeable.
any other tricks (after recapping) for this? thanks guys.
i have a fender bassmaster, and i use it all the time at 10, cause it breaks up so nice. i just recapped it hoping to get rid of the ground hum/noise when its at 10, but its still pretty noticeable.
any other tricks (after recapping) for this? thanks guys.
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- george martin
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its probably always going to have some noise. There are more ways to get it down - changing out of tolerance resistors, diodes (if there are any even in there), tubes... but its never gonna be dead quiet like a mic preamp or something.
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wouldn't know. i have a twin reverb
seriously, what are you running through it? i think a bit of hum is charming, too much annoying, and it is pretty much everpresent to some degree, no matter the amp. stating the obvious: ground hum is one thing, source hum (single coils, for example) quite another...
seriously, what are you running through it? i think a bit of hum is charming, too much annoying, and it is pretty much everpresent to some degree, no matter the amp. stating the obvious: ground hum is one thing, source hum (single coils, for example) quite another...
Tubes?
Does it hum with a shorted plug plugged into the input?
Take out the toobs & turn the amp on. Is there any hum in the speaker? This means that the output transformer is picking up mains from the power transformer via the chassis. I use plumbers washers about 3 or 4 mm thick to lift the output transformer off the chassis.
Gets rid of that last damn bit of hum.....
Peter
Does it hum with a shorted plug plugged into the input?
Take out the toobs & turn the amp on. Is there any hum in the speaker? This means that the output transformer is picking up mains from the power transformer via the chassis. I use plumbers washers about 3 or 4 mm thick to lift the output transformer off the chassis.
Gets rid of that last damn bit of hum.....
Peter
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- ghost haunting audio students
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Re: do all amps just hum pretty loud when at 10?
Whatever you do, don't do that. Unless you want to cash in on your life insurance for someone else.rjd2 wrote:or, more specifically, would modding a 3-pin amp to be ground lifted be a bad idea to get rid of hum?
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Re: do all amps just hum pretty loud when at 10?
Yes, that would be a bad idea. The third pin is there to save your life, don't mess with it in any way for any reason.rjd2 wrote:or, more specifically, would modding a 3-pin amp to be ground lifted be a bad idea to get rid of hum?
It may very well be that your environment is causing the hum (flourescent lights, dirty power, etc.) Also, in answer to your question, different amps do have different quiescent noise levels. In general, a more expensive, higher-quality amp will have less noise at higher gain levels.
Todd Wilcox
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