Do better jumpers or biwiring improve Summits

I have owned the Summits and have biwired them as well as single run and jumpers.

In my experience I agree with Joey_v. Perhaps it has to do with the bass now being driven by the ICE modules, however biwiring didn't yield any improvement to my ears.

However, in the past, biwiring Martin Logan SL3's yielded a very noticable improvement.

Best of luck.