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Post by Johnkenn on Oct 10, 2014 17:15:41 GMT -6
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ericn
Temp
Balance Engineer
Posts: 14,953 
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Post by ericn on Oct 10, 2014 17:27:50 GMT -6
Your spending more time on YouTube than my 10 year old John! |
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Post by Johnkenn on Oct 10, 2014 17:31:51 GMT -6
gifs are our friends...
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Post by Guitar on Oct 10, 2014 21:52:20 GMT -6
agree it gets kind of silly in here sometimes. nice to balance it out with true silliness.
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Post by Bob Olhsson on Oct 10, 2014 23:12:06 GMT -6
At Heider's they just plugged the amp into an isolation transformer like the ones people once used as SOP to service tube gear. I've still got one sitting in my closet alongside the strobe tuna.
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Post by formatcyes on Oct 10, 2014 23:52:37 GMT -6
I have been advised to add a "hospital grade" circuit - a 15 or 20A line, in conduit, run all the way from my service box to my family room, where all the action takes place. I was also advised to "re-ground" my box with a fatter, longer grounding rod. But I wonder if this would eliminate the rather bad hum picked up by anything single-coil when a refrigerator and air conditioner(s) are running off the same municipal power source. It seems that my entire house would have to be on an isolation transformer, which doesn't seem practical, or affordable. One widely-known thing I can confirm: lighting dimmers are bad bad bad for AC line hum. Insanely bad. And of course all of my overhead lights are dimmed. We work in low light these days because of it. Don't bother with the conduit. But for sure I would ran a new line and earth point. The earth rod actually shouldn’t do much as the power system is M.E.N (multiple earth neutral) at your man switch board the earth and neutral are joined together. The neutral is earthed at many points in the distribution system. But it wil not hurt to have a better earth stake. The refrigerator and ac should not cause any drama. Dimmers can be a pain in the ar;;;;;s for audio just say nooo. |
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