Looking for cable, 2 coax with overall 3rd shield

I would like to build about 5 cables for now. I might just try some microphone cable, then check to see if I can induce noise or generate any piezo voltage. Still in the market for the right cable though. Mikek

Most cable dielectrics generate piezo voltages.

Ok, see if I can generate a not unreasonable amount of piezo electricity. Mikek

All you have to do is attach the cable to a mic input, then strike the cable against the edge of a table. Or hit it with a hammer. Almost any zetz will do.

The first time I heard this was from the cables on a moving-coil transformer. I was really surprised. I knew of piezoelectricity, but didn't know that cable dielectrics could generate it.

I guess the point is some cable generates less piezoelectricity than others. I would want less. Mikek

Don't know about piezo, but tribo-electric effect is the bane of cable manufacturers.

this

I wouldn't think so. Most twinax i have dealt with did not have shields on the inner conductors. Check vendors for twinax structure. This would be a specialty instrument cable.

?-)

I called Belden, I was told, they don't make this type of cable. Mikek

I searched for the same thing a few years back to make my own custom RCA au dio connectors for my Car system when I was Competing, The best thing I cou ld find was high grade Microphone wire, back then it was cheap but this was 10 or more years ago. They make a number of styles and types, wire gauges jacket thickness. Go to a good Music store or Electronics shop like a Recla mation center or similar store to get the best deal. You won't have the cho ices but you will pay much less than a Music Center.