I think if you get a cable cooker and then
cryogenically
freeze them as a secondary operation those old cable will be just fine.
Seriuosly now copper is copper and there is a lot of money wasted on it that could be far better spent elsewhere in the audio chain to yield better results.
I find regular zip cord, normally I use 12g because there are some serious systems I push at times, with good soldered connections at each end work just fine. Buy a better driver, recap your crossover or get a Xilica and leave those expensive money pit wires on the dealers shelf.
Seriuosly now copper is copper and there is a lot of money wasted on it that could be far better spent elsewhere in the audio chain to yield better results.
I find regular zip cord, normally I use 12g because there are some serious systems I push at times, with good soldered connections at each end work just fine. Buy a better driver, recap your crossover or get a Xilica and leave those expensive money pit wires on the dealers shelf.