I previously owned PSB Gold Is and was using a single run of Kimber Monacle XL speaker cables. I replaced the standard metal jumpers with Mapleshades copper ribbon jumpers and was very happy with the results. Im currently doing the same with a pair of Silverline LaFolias. To do both speakers with the Mapleshade jumpers will only cost $40.00. You will be pleasantly surprised at the improvement. Good Luck.
Jim
Jim