This is someone's description of shotgun cabling/wiring from audioasylum.com. 'Basically Shotgun configuration is to use an entire run of speaker cable for just one side of the signal. i.e two separate lengths of cable, one for positive and one for negative. If you were to Biwire and Shotgun, it would require 4 lengths of cable.' Has anyone tried this ? If so, was there any worthwhile improvements ?