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Electrical popping

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scorpio333:
Bit of a rant - every time the furnace condensate pump turns on or off, the speakers POP. One more thing to fix! The stereo setup is on its own circuit and is about 30’ from the pump. Quick google didn’t turn up much. Time to pull out the aluminum foil and make a hat, or a shield for the pump. The colder it gets the more often it happens.

rgpit:
How is the pump powered? Directly from furnace controller or is it connected to 120 VAC line? You can use a noise suppression filter.

scorpio333:
The pump is powered with a standard grounded plug, I switched it to a different outlet and that didn't cure it.

I'm beginning to wonder if the Furman power conditioner is at fault. I attempted to plug in a second turntable last night while the rest of the system was up and running...POP...tried it again and no pop. I don't recall getting pops when I was using a surge protector for the rig.

The washing machine also causes noisy calamity.

Easy solution, unplug the pump and don't wash clothes while listening to records.

Sir Thrift-a-Lot:
That sounds like your Furman could be defective.

scorpio333:

--- Quote from: Sir Thrift-a-Lot on December 08, 2018, 10:14:46 AM ---That sounds like your Furman could be defective.

--- End quote ---

I have two others, going to swap one and see what happens.

The other thing I’m suspecting is the Jolida JD9, it’s a gain monster. Perhaps it’s picking up EMI. I switched over to my 2nd table with a MM cart that goes into a different pre. No pops.

Also, the tv/theater setup in the same room on a separate circuit with two Furmans never pops. Electricity is fun!

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