In my truck, i have an audiobahn abass10 and a rockford fostgate punch 600W amp which was installed by bestbuy. one day i was turning down the volume and my sub went out. i turned it back up a little and it started hitting again. i noticed it that on my display, as the volume went below "10" it would cut off, and if it was "10" or higher it would hit. it only did this for a day or two, then it stopped all together. i know very little about it but i figure its not blown. i know nothing about fuses or anything. all i know is it seems like the signal is just not getting to the sub anymore. can anyone guide me in the right direction as to what it could be or what i could do. Thanks.