OK, so if it is a coax with BNCs on each end and your source is 50R, that's one thing. But I'm referring to using some sort of relatively plain wiring (whether or not coax is involved anywhere) to connect your scope to some low-frequency (<5MHz) circuit. That's a 1X probe of sorts and you would just use the scope with a 1M input, assuming you even have a choice.
Sure, if frequencies are low enough you could use cab tire or microphone cable or whatever. Not an issue. I think we're on the same "wave length" here (really bad pun intended) that's why I said "Of course with audio frequencies it matters little". It would equally apply to AM radio and stuff in that range, but at least proper shielding should be used for small signal situations.
Didn't really mean to start an argument.