Im not an expert or anything, but from what i have read, the only way to do that is to get 2ohm speakers. If you dont have 2 ohm speakers, then i dont think u can get a 2 ohm load and use all 4 channels, unless you wire them up in series. But what do i know, im just a noob.//content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif