Yes, but literally every cable is shielded. And yet some designs are still more susceptible to noise than others. That's why designs like star quad exists, right?
Not all cables have a shield. (Almost all of the red and white and yellow cables from the store have no shield.)
And most of the superfine TT tone arm cables are just 4 wire and no shield.
One sometimes has the in a metal arm, and they always get them into a terminal block pretty smart-quick to go to a better cable, which would be too stiff for a tonearm.
The starquad https://en.wikipedia.org/wiki/Star_quad_cable
Geometry is like a twisted pair in that the twist is designed to cancel out magnetic field inducing a current over the long haul. The quad part is to also cancel out inducing a current over the short haul of a field limited on length.
For the electric field, the shield is designed to take care of that.
If one has 50 or 60Hz hum, then the StarQuad takes care of it on the IC side.
One can still have ground loops and magnetic fields, but it does not a whole lot get easier going to a different geometry, other than maybe coax.
Thanks, but as an electronics dunce I wouldn't immediately understand the implications of one having a low impedance vs the other having a high impedance.
Many of the answers are assuming a level of technical familiarity that I struggle with, unfortunately.
I’ll give you honesty.
Most claim to know more than can be believed.
A source that has a low output impedance can drive high inductance and high capacitance loads more easily than a high output impedance.
The values were are talking about are pretty small.
Some speaker cables have high capacitance, and when they get long, the amount of capacitance goes up.
If the cables are long, then go for low capacitance and inductance values. (Your’s are short.)
I presume they were shielded?
Correct, star quad Mogami with some cheap RCAs.
I’ll put different RCAs on the end.
They are also going into a different amp (an old NAD 3220), and the volume was railed to 100%.
Maybe it coming in through another path like power or speaker or ??
Thanks. I came in to the thread figuring most of what I was "worrying about" would be a non-issue, but wanted to double check. As to the details, I'm still scratching my chin a bit. But that's me....
Having a lot of cable, and ones that induce currents in their neighbouring cables is a real thing.
Being careful and prudent is not a bad thing.
Length and cable routing count for a lot too.
... The copper is discolouring making soldering a nightmare.
Try using some rosin flux… Jaycar has it.
Sometimes it is just a pain, and some extra flux help even on new wire.
I also forget how much of a PiTA soldering wires is… but having the components and getting the cables made up is worth it on a Sunday.