How are phono cables different (related to hum issue)?


Wrestling with frustrating humming for weeks on a new TT. Finally inserted the cheap stock phono cable, and the hum is nearly gone. Was using spendy phono cables bought separately prior. So what's the sitch here? Shielding? Cheaper = carrying less signal? I was using the ground wire with both (and tried without, twas worse). Glad the hum is gone, the sound is duller but removing the hum makes it almost worth it. Of course now I need the color back, but not the hum. 
128x128zufan
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Facepalm: turns out the hum was due to my MC cartridge’s. MM has (almost) no hum. Bought a Vincent phono pre to try also, in case it was the Schilt. Nope, there’s something funky with my house wiring, grounding or whatnot the MC picks up, apparently. The cable I have now btw is a Pangea phono cable. I was using Zu’s & returning them. Wish I had figured this out sooner. Even hired an electrician to come out and check my panel & grounding. All was normal. @finleyville
@scott_w

I had the same problem for a long time, and tried many different arrangements without any luck.

After reading many forum posts, I found a recommendation for Blue Jean Cables LC-1 interconnects and gave them a try. Low capacitance, and double braid shielding. No more hum, EMI, RFI, nada! No lack of air or detail in my system either, just great sound and no more annoyances.

I also don't need to use any grounding wires either.

$38.75 for a 3 foot pair on Amazon.
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