a fairly large dia. for speaker cables, yes - but be sure the conductor is large; some cheapo cables have very fat plastic insulation and thin wires!!
most cables are "Oxygen-free copper" except maybe the cheap imports and... if they say Oxygen-free copper how do you know it really is
Belden is a quality name for all wiring
also, there are some liquids containing conductive polymers that you can use to coat the connectors; I have a tiny bottles form many years ago, and I think it might even be called Tweek ;]
that will help reduce corrosion at the connection
most cables are "Oxygen-free copper" except maybe the cheap imports and... if they say Oxygen-free copper how do you know it really is
Belden is a quality name for all wiring
also, there are some liquids containing conductive polymers that you can use to coat the connectors; I have a tiny bottles form many years ago, and I think it might even be called Tweek ;]
that will help reduce corrosion at the connection