On 16/02/15 11:51, Len Ovens wrote:
It seems even with all power coming from one outlet, I have one
amplifier with some hum. It is way less and by playing with levels I
was able to make it so low as to not be noticed. However my plan of
isolating everything should fix it completely.
Look at the signal cabling or even nearby EMF sources. I recall ages ago
having a Dbx 160 compressor in a rack under a Klark Teknik DN27 graphic
EQ with a small but noticeable hum in the speakers. Separating these by
1 rack space cured the hum!
And some equipment just hums by itself anyway, especially as it ages.
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