I got a powered sub installed yesterday and for some reason it seems to work half the time when I start the car. The unit is getting powered but sometimes the unit will get bass and sometimes it wont. I've checked the fuse and it seems fine but when I've unplugged the fuse and put it back in, I've had success with the sub then working. It then will work fine while driving, nothing goes off or shorts out so I dont believe its the connection from the speakers?

Anyone have any similar issues with their set up like this?

Thanks in advance

 

Did a line out converter get installed along with the powered sub? That needs power too so check to see if that's getting a good constant power.