Charge coupled networks?

Is there anywhere a deeper explanation on the rationale for the "charge coupled" network designs used in the more modern JBL systems. I mean the basic idea seems to be to apply a DC bias voltage to all capacitors in the network so that - at least for lower volumes - no zero voltage crossing will occur. Is there some real evidence that capacitors have some non linear behaviour in the "crossover" region?

Do a search for Charge Coupled Networks. This posted link is the clasic Audio Magazine artticle by Walter Jung

http://www.capacitors.com/picking_ca...rs/pickcap.htm

Rob:)

Thanks a lot! Very interesting link.