I can get a five channel 1100w US audio amp from a friend of mine for $250. However, i have 4 X 220w 6" sony 3-ways and 2 X sony 12" 1200w subs. I know that the amp will not be enough to power the whole system and was wondering if i could hook it up to just the four speakers and leave one channel unused. Or maybe hook 4 of the channels up tp to the 2 subs. I will get another amp if i do this, eithor an amp for the subs or for the speakers depending on the best way to hook it up. Is it worth me getting the 5 channel? Or should i just go out and buy two new amps?