No! no one would ever do that! The negative speaker post is not the same as the common ground on the input RCA's.
What would you do then -- use only the positive leg of some really exotic speaker cables and RadioShack 16-gauge for the Negative leg? It just doesn't make sense.
What would you do then -- use only the positive leg of some really exotic speaker cables and RadioShack 16-gauge for the Negative leg? It just doesn't make sense.