Bridging depends on the amp, and what your going to power with it. For instance the fosgate A series amps bridge the front channels together for one channel, and the rears for the other. Bridging one of these for components will fook up your soundstage by mixing the left and right channels together //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif