How does bi-wiring work?

your speakers need be properly configured with a separate set of mid / high binding posts AND you must use what is called an external biwire speaker cable AND if at all possible physically separate he bass cable from the mid / high cable

@tomic601 , oops! I missed the "AND" part. (My eyes are bad and getting worse every day.) I am shotgun biwired with two separate runs of cable, but they are actually NOT separated AT ALL. (They are running completely right next to each other.)  As a matter of fact, as I was talking to @soix about, since they are long runs of cable and I was trying to keep things sanitary, I have them zip-tied together in places. I don’t if this mitigates the zip-ties at all, but I also have the cables individually wrapped in automotive spiral wrap. But removing the zip-ties and separating the cables 4" wfouldn’t be all that difficult. But I would also say that at the binding posts where they terminate, I don’t think that those posts are even 4" apart.

@panzrwagn --

+1

@tomic601 does true bi-wiring bypass the crossover in a speaker?

We need to recognize that the concept of bi-wiring came from speaker manufacturers, not cable manufacturers.  Some of the most brilliant, and respected minds used real science to reach their conclusions.  Based on my limited understanding, when a woofer is moving it creates back EMF, thus interfering with the upper frequencies.  I would suspect this phenomenon can be measured, and validated.  The concept of bi-wiring caught fire with the majority of "legit" speaker companies adopting it, and touting its sonic benefits.  This may be the case of "mass duplification" (lots of people being duped) or some of the best of the best talent in the industry saw and heard something real here.

It is not the function of cable companies to debunk manufacturer's marketing materials and methods.  If so, they'd rip them a new one for the crappy cables they use internally and their sonically degrading "high manufacturing/service efficiency" connection/termination methods.  So, offering up a product that embraces a (respected) manufacturer's credibility position is neither blind, nor unethical.  Just good business, based on a solid foundation.

Yes but bi amping is not as subtle.