Is my power chord going bad?


Hello all, 

I have a power cord purchased from an independent cable maker. When I touch the interconnects running from my phono pre to my preamp to the power chord I get an audible hum coming from the speakers. This doesn't happen when I touch the interconnects to any other power chord in my system. The cord runs directly from the wall socket to my amplifier. 

Shouldn't a properly shielded cable not allow this to happen? 

Thanks for any advice!

128x128blue_collar_audio_guy

It should NEVER touch anyway. 101 cables routing. When the cables are routed correctly you will have ZERO noise. Off the ground off each other cross at 90 degrees. I use as little shielding as possible. It KILLS the dynamics of a system if your not careful.. Routing is a LOT better alternative.

There is a place for shielding.. The right kind is more important than just having shielding. Cable construction (weaves) are quiet because of construction, not shielding..

Right on. They don't touch regularly it was just something that happened that I noticed. I definitely know cables shouldn't touch. 

Power "chord" good God lol. Thanks cellular device. You would think this thread is about an 80s hair metal band with that title 🤣

So the question becomes, are all your interconnects the same make and model, or is the one running from the one on your phono pre different?

@blue_collar_audio_guy It took me a while to understand what you were going on about.

Why would you want to touch your power cable with your interconnect cable?

Which part of the IC are you using to touch the PC?

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My phono cable from turntable to phono pre (Audio Sensibility impact SE) is different from the rest of my interconnects (Vintage Western Electric). My next cable upgrade will be to all Audio Sensibility cables through the system.

I didn’t want to touch the cables it just happened by accident and that is when I noticed the hum. The vintage western electric is a simple cloth sheathing however there is no noise when I use a different power cable and try the same experiment. Hence the question of the power cable being the cause of this and if that indicates a faulty cable. Hope this clarifies.

The cables touched near the center of their runs. It is a high current cable for use with amplifiers. 

@blue_collar_audio_guy 

what happens if you move these interconnects to preamp/amp connection and conduct the same experiment? Do you still get that hum?

Rearrange the gear.

Buy shorter cables.

Phono cables should be nowhere near, and should not be able to get near, any power cord.

 

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what happens if you move these interconnects to preamp/amp connection and conduct the same experiment? Do you still get that hum?

I havnt tried it but I'm ditching those cables regardless for peace of mind.