the hum was always there,Originally Posted by worrasf
Filip,
Has it always hummed or was it ok at one point and then became noisy?
You say the noise is coming from the amp - Is the noise coming through the speakers (likely to be ground loop related) or from the amp itself (likely to be tube related).
You don't say what amp you are using but I know from experience that harmonics from tubes can cause really annoying noise. I had some of this with my Croft 25R preamp until I finally hit on using a Quad of vintage NOS RCA 12AX7's (very low noise) and a single GE A2900. It still hums a little but nowhere near as bad as before. The Croft power amp hums a little but I think it's transformer related.
Oh and by the way - put the earth lead back in he loop
Steve
and it was really bad at the beginning when I had my old pc plugged into system, I could hear like someone put microphone inside my pc!
noise and buzz, hd motor buzz, when I moved mouse - noise,
plus ground hum....just terrible
the thing is, I am not hifi user, it's in my studio, where there's many tools and boxes, and many cables connections;
bum come out of speakers, it's not amp hum...just hum and buzz in monitors
i did try many things - all connected to 1 socket, star connection, all cables balanced, etc..
no way to find it...
anyway, seems this is more serious problem then I thought-
I need to resolve it asap, please direct me to someone who can hep here in uk
cheers
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