Paulwp - The point, I believe, is that current is the same throughout a series circuit. The + speaker wire, the crossover and driver, and the - speaker wire comprise a series circuit. The amount of current for a given voltage applied depends on the impedance of the load - the crossover/driver, but it is the same in the entire circuit. That is; there is not a lot of current down the + wire to the post, then a little current through the load, then a lot of current back through through the - wire. (Discussion of electromagnetic field needed here, but beyond scope) The crossover is frequency sensitive and represents a high impedance to frequencies outside its bandpass. Current resulting from voltage alternating at frequencies outside its bandpass is therefore relatively small and it is so through the entire series circuit including the wires. No harm is being done by biwiring with the jumpers in place, however. It is the same as running two wires to each post of non-biwirable speakers - each "polarity" wire of the set is simply common at both ends - you are just running more wire in parallel to each post. Do your speaker wires have multiple strands? Same thing. Some may feel that it is advisable to do or not do one or the other because of different sound, but that is a different discussion. :)
I am Not hurting anything right ??
I have a pair of Sonus Faber Concertinos that have bi wire posts. I have Bi wire Cable but have told NOT to Bi wire these Speakers. so I left the jumpers on the back and pluged in the cable as normal(standard bi wire configuration). Speakers sound great. But am I running any risk as to damaging the speakers?
Best Regards
Best Regards