I searched and read many posts after buying my riocar 20G, and it appeared that the pac oem-1 would work with my factory bose amp and speakers. I finally got everying together today, and the volume is WAY too low. At 0db can just hear music a little louder than a whisper. I turned the gain all the way up on the oem-1 and it barely went any louder. Has anyone run into this problem? What do I need to do? Did I waste $80 on this stupid thing?