Speaker Cable for Thiel 3.6

I'm using mit 750 plus 3, very satisfied, also using mit 330 shotgun ic's. smoooth, dynamic, great imaging and tons of low level information. as you already know this is a world class speaker but synergy is critical to bring out the best. good luck.

I have had great success with analysis plus oval 9 speaker cable. I have used it with Thiel 2.2 and Thiel 2.3's.

No offense, but are you sure it is not your amp or other electronics that are bright? I use silver ICs and speaker cable and have found them to create warmth and less harshness in the highs.