I have a kicker zx with broken outputs for channels for channels 3 and 4. I have the front speakers on channel one and the rears on channel 2. 120 watts RMS x 4 at 4 ohms (170 watts RMS x 4 at 2 ohms). If i got the amp fixed and put each speaker on a single channel would they get more power? and how many watts am i putting out now to each?