if you own VR4s, or jr's or any Von Schweikert speaker that has a bass module/mid range tweeter cab design...you NEED to be running 2 pairs of speaker cables.
I think Frank does this w/his VR4s all ready.
I spoke w/my dealer on a conference call with Kevin at VSA who stressed the importance of doing this to really "make them sing".
well..I finaly was able to do this w/a 2nd pair of my custom Gregg Stralley cables, and i am totaly blown away. Its like I got new speakers..a very dramatic change, as if the bass modules "woke up". Its the way the crossover is designed...they (bass cabs) want their own direct connection to the amp. bi-wiring sucks ass comparred to quad wiring these speakers.
10x the bass energy and drive. I get serious SPL even at low volume. Its almost like I squeezed more juice out of the Sony...which at 150wpc was barely enough to drive these speakers the way I wanted them driven. No problems any more in that dept.
I find it hard to fathom that my custom jumpers were really "missing out" on that much signal current or overall "potential", but the evidence is as plain as a boner in sweat-pants.