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Amplifier hum - normal?

Is it normal for amps to emit a slight humming noise from the transformer when turned on?

I never noticed it in my old integrated that I lived with for over 10 years, but that was lower power. Now I've gone from 50wpc to 120wpc... don't know if that makes a difference here though.

I mean, it's not nearly enough to bother me or even really be audible past 3 feet away... but I am curious if this is typical for amplifiers to do this.
djembeplay

Showing 7 responses by djembeplay

djembeplay OP
169 posts
 
I have a Yamaha M-40... did they use quality transformers?

It is pretty quiet... i would say you could barely hear it from 3 feet away from the chassis top in a silent room.
djembeplay OP
169 posts
 
Hmm... I'm not sure what would constitute excessive or normal. I have sensative ears... lol, but I'm sure we all do here.

Idk.
djembeplay OP
169 posts
 
So this humm isn't something that indicates a poor-quality transformer or a malfunction?

A friend used to have an older Crown amp and he said it used to buzz much louder than this Yamaha.

Also, I wanted to add... whatever I have my volume set at makes no difference what-so-ever. With my amp gain all the way down, I still hear the same buzz.
djembeplay OP
169 posts
 
Really? Hmm... Your not referring to noise coming through your speakers, right?
djembeplay OP
169 posts
 
Hmm... DIY you say... how would one go about such a project?
djembeplay OP
169 posts
 
Hmm... I think it's a bit over my head. I've never made a circuit... but, I suppose this may be a good place to start.
djembeplay OP
169 posts
 
I do have a relative that is good with soldering and circuits. I'll see if he's up for a project - could be fun.
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