I agree with jeffreybehr and would add that some people including myself like to use identical speaker cables for both low's and high's runs to the amp.Others like to use heavier gauge on the low's and lighter gauge wiring on the high's.I personally use Analysis Oval 9's but seen Kimber Kable 8TC for low's combined with 4TC for high's that really like to try.
Best
George
Best
George