Does biwiring change impedence?

The system was two stereo amps in bridged mono and the owner of the system had them biwired to his 4 ohm Paradigm speakers. I think it would be better to run the amps in stereo and biamp, but that is the way it was. The amps were H/K 16's upgraded and bridged by a craftsman who makes a living repairing and selling audio gear. The seller (the technician) is the one who told both of us that biwiring cuts in half the impedence. He said the amps were looking at 2 ohms since they were bridged and biwired.

OK. When an amp is bridged, is impedence cut in half absolutely, or is the impedence inversely proportional to the power gained? My Citation 7.1 is rated at 130W x 4 and 400W X 2 bridged stereo. I think it puts out 1KW into 1 ohm.

Yes. Thank you, Al. It's very cool. I can chew on it for days. Thank you also for the reference to the website on biwiring. I am biamped and have never biwired, but I never knew why biwiring was superior to single core wiring. Thanks to everyone. Lynne