i just put in a new headunit this past weekend. i got a dual xdvd710 looks great in the monte. my question is, ive got everything hooked up right, but my sound is really low. the factory unit pushed out sound really good the factory amp even made it sound great, but i threw in that dual 7inch and its like ive gotta to turn the thing all the way to 40 to hear anything, ive played with the eq's but nothing is working any ideas?