2. amps-preamps
  3. 185834-181583

Short?

I have a McIntosh integrated hybrid tube amp / VPI table / Revel speakers.  When the AC comes on or off in the room i hear a loud pop.  I used to think it was a scratch on the album but now I realize its some sort of elelctrical issue.  I thought it might be a table grounding ussue but now it also happens occaisionally now when I'm not playing an album.  So does the amp need to be grounded?  And to what?  Thanks.

mojo771
oddiofyl's avatar
oddiofyl
3,880 posts
 

Can you put that AC on another circuit ?    Sounds like noise on the AC line caused by the compressor kicking in

elliottbnewcombjr
5,461 posts
 

found these, didn’t read them, hope it helps.

https://carvinaudio.com/blogs/audio-education/proper-power-up-sequence-explained#:~:text=So%2C%20proper%20power%20up%20sequence,power%20amps%20to%20the%20speakers.

https://www.sweetwater.com/insync/power-power-off-sequence/

https://www.sinbosenaudio.com/info/the-correct-sequence-of-turning-on-and-off-audio-equipment-i00156i1.html

 

 

In a long ago setup I had the same issue. Some equipment can and other equipment does not send a signal to the speakers. Went on for years, didn’t damage anything (luckily?)

Some power protection devices have timed delays for activation of individual outlets dedicated for specific equipment to eliminate that problem. Also, timed sequential turn off.

Amazon Power Sequencer

https://www.amazon.com/Monoprice-Power-Conditioner-Sequencer-Outlets/dp/B01MYNCACV/ref=sr_1_5?keywords=power+sequencer&qid=1691324281&sr=8-5

 

 

mojo771 OP
49 posts
 

I forgot to mention that I also have a Niagara 1200 power conditioner.  Not sure if its also supposed to act like a surge protector but it doesn't help prevent the problem either.

 

 

erik_squires
16,119 posts
 

This doesn't sound like a grounding issue, unless you have very high amounts of static (low humidity).

Sounds much more like a failing cap and it needs to be serviced.

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