i have 120 watt 2 chan. equilizer hooked up and i have every thing hooked up as it should be but there is no sound to the subwoofer. i want to use it for 2 6x9's but i dont know what wires from the head unit go where in the amp. the power light on the equilizer is on but there is no sound at the sub. i was just trying it out to see if it still worked so i bridged it up to my 500 watt sub to see is it would give my sub a little pounce but there is nothing. any know whats wrong??