I've always scratched my head as to why one cable run and jumpers would sound different from two runs of cable since they are usually coming of a single set of amp binding posts. In the case of jc1 monos there are two sets for each channel serving low and high frequency. I personally use one run of Analysis Plus Big Silver Ovals and same in 12" jumpers. The tweeters opened up more when I took the factory straps off and added jumpers to my Tributes.