I have bi-wired my Hales Sig 2's for many years. I have used a cable called Highwire's and IMHO Bi-wiring is definitely the way to go with these particular speakers.
Paul Hales once told me that bi-wiring is better if you can dedicate seperate cables for each in/output.
Paul Hales once told me that bi-wiring is better if you can dedicate seperate cables for each in/output.