On my vintage but completely different system, the choice of speaker wires didn’t make a significant difference unless I run very long >15’ runs. Any decent 12awg stranded copper cable should work. Are you connecting them up in parallel?
Vintage Speaker Choice
Question for all who wish to respond. If you had a choice between identical condition (excellent) Wharfedale W40 or Large Advent what would you choose? Price similar as well. Say under 400 bucks per pair. Thanks.