The idea is not mine... from "Audioasylum" site. The basic idea is to connect all the GROUND sides of individual speakers in a loudspeaker to each other as close to the speaker's baskets as possible, with as short a group of wires as possible. (of course not both of pair of loudspeakers, just the 'speakers' inside one loudspeaker to each other, then the other group in the other loudspeaker separately.)
This is supposed to increase the probability that the whole system is time coherent. And works if system is single wired or bi-wired. For more "aye" sayers see "audioasylum" site and do a search.
This is supposed to increase the probability that the whole system is time coherent. And works if system is single wired or bi-wired. For more "aye" sayers see "audioasylum" site and do a search.