hi, i just bought a 2000w 4 channel amp with the intention of powering 2 500w subs. I dont know if it was a bad idea to use a 4 channel amp for this, but i got a good deal on it. I also have some 400w 6x9 for the rear. So here's my question: If i ran the front speakers off of my head unit, would it be possible to run both the subs and 6x9's off the same amp, and still have it sound good? Please include any suggestions, at all, and ask questions, if you dont understand what im asking, cause i dont really know how to explain what i want to do. Thanks a lot