Set of MC1.2KW getting a new home...

[cdobson]

Originally Posted by audio bill

I can't either and would not recommend it from a safety point of view, my post was just to clarify what a cheater plug is. While it can be a useful tool to help identify the potential source of a system ground loop it is generally not recommended as a permanent solution. Use at your own risk applies!

Thanks for the feedback. What is the better solution? What do I tell my electrician?

[Masterlu]

Chris... do you have the ability to run dedicated lines? If you can, or already have them, make sure that both Amps are fed off the same phase from the electrical panel.

[cdobson]

Originally Posted by Masterlu

Chris... do you have the ability to run dedicated lines? If you can, or already have them, make sure that both Amps are fed off the same phase from the electrical panel.

Hey Ivan,
Yes - I had a dedicated 20 amp line run for the amps. I had the p10 plugged into a non-dedicated 15 amp line.

[j3brow]

Originally Posted by cdobson

Hey Ivan,
Yes - I had a dedicated 20 amp line run for the amps. I had the p10 plugged into a non-dedicated 15 amp line.

Rule #1. Never run just (1) dedicated line. You will always need more and it’s more economical than calling electrician back. Personally, I would want (3) 20 amp lines in your system, at a minimum (2). Just because you own a P10 does not mean you don’t want a 20 amp dedicated line feeding it. Another line may get rid of your hum and if not it will benefit the P10. And talk to Ivan about Furutech outlets too. It all matters.

[audio bill]

Originally Posted by cdobson

Thanks for the feedback. What is the better solution? What do I tell my electrician?

Ground loop problems can be difficult to diagnose and correct, but the problem may be due to a difference in ground potential between your dedicated 20 amp line run for the amps and your non-dedicated 15 amp line. I'd suggest having your electrician check the ground potential on those two lines and take whatever steps are necessary to have a common ground on both circuits, or only use the 20 amp circuit for powering all components and see if the hum is eliminated.

[cdobson]

Originally Posted by j3brow

Rule #1. Never run just (1) dedicated line. You will always need more and it’s more economical than calling electrician back. Personally, I would want (3) 20 amp lines in your system, at a minimum (2). Just because you own a P10 does not mean you don’t want a 20 amp dedicated line feeding it. Another line may get rid of your hum and if not it will benefit the P10. And talk to Ivan about Furutech outlets too. It all matters.

Thank you - I appreciate the guidance.

[cdobson]

Originally Posted by audio bill

Ground loop problems can be difficult to diagnose and correct, but the problem may be due to a difference in ground potential between your dedicated 20 amp line run for the amps and your non-dedicated 15 amp line. I'd suggest having your electrician check the ground potential on those two lines and take whatever steps are necessary to have a common ground on both circuits, or only use the 20 amp circuit for powering all components and see if the hum is eliminated.

Hello,

Thanks for your suggestions. Yes - I did try that as the 20amp line terminates into a four/quad outlet. The hum remained. I’ll get an electrician out to look.

[thughes]

The hum remained. I’ll get an electrician out to look.

I have tried that. The electrician was here several hours, and he was very helpful, but we never found the source of the hum. I have three dedicated 20 amps circuits and several 15 amp circuits. All the dedicated circuits are on the same phase.

[Jul17]

Originally Posted by cdobson

Hello,

Thanks for your suggestions. Yes - I did try that as the 20amp line terminates into a four/quad outlet. The hum remained. I’ll get an electrician out to look.

I have that with mc501. Replace xrl cable, no more humming sound.

[cdobson]

I solved the issue. No more cheater plugs. [emoji106]