Ive replaced my standard headunit with a Alpine headunit and it will not run the rear speakers. I have been told this is because they are amplified - they are small speakers - i would have thought 10cm, and one of them is bigger than the other at the base which i assume is the amp? Does anybody know how i can get them to work of this head unit? can i play with the wires at the back of the headunit or is it something major to do? Thanks in advance