Once again...
"I already bought a 20' line of RCA to run in my basement from amp wall plate to the location of the sub wall plate..."
No, you probably bought 20' of coaxial cable.
It may or may not be already fitted with RCA connectors on the end. In that case it would be more accurately described as 20' of coaxial cable with RCA plugs on the ends, but not 20' of RCA.
It could just as likely have had "F" connectors on the ends for use in OTA or CATV RF signals. In either case. it would still be coaxial cable. Would that now be referred to as 20' of "F" connector? I think not.
"coaxial" is a type of cable which consists of a central conductive strand, usually copper, surrounded by an insulator which is, in turn, surrounded by another layer of mesh, foil or some other conductive material. Generally, this ihas an outer insulation as well. Generally, this is 75 ohms impedance for audio and video purposes.
IOW, "coaxial" is a cable type. RCA is a type of connector.
Connectors go on the ends of the cables. Generally, the type determines it's usage.
It can be used to pass various INFORMATION, or signals. Now, as far as what information these can pass, here's a brief primer.
When outfitted with RCA plugs on the ends, this can be used for composite video signals, component video signals, digital audio signals, analog audio signals and pretty much anything else.
When it's fitted with "F" connectors, it's usually used for CATV or OTA antenna signals.
Isn't this covered in one of re FAQ's? If not, it should be.
