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Re: Basic circuit theory.

I was pointed to www.cableconcepts.com They state that their cables and the pigtails have a liquid EMI/RFI filter. Whether that is what makes them work to absorb back-EMF, who knows?

I also note that another dealer besides MD calls them Cable Rectifiers. Again, I have no idea whether that hints at how they are supposed to work. Maybe a diode channeling off the wrong polarity appearing at the + terminal? But this is AC, not DC. Would it matter whether you are using a SE or PP amp, or does the cross-over design matter? Again, where is the energy going? Mechanical energy getting absorbed by the liquid?

Intriguing, isn't it? I think John Atkinson is right on this one --the manufacturer is going to have to explain more to overcome the snake oil presumption where the claims seem to defy physics!

I have Martin Logan speakers, which I have heard are susceptible to bakc EMF going from the woofers to th elctrostatic panels. Since the impedance of the panels drops below 2 ohms at 20kc, and I use tube amps which have higher output impedances, the panels start looking like a good path for the back-EMF. Biamping is reputed to be especially good for this reason, as is bi-wiring, since the wiring adds a little more impedance between them. A solution for the woofer's back-EMF is attractive, but at the moment they are well down the priority list at $125!

Tom

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