ok im not familar with infinity other than what ihave heard. but within the past 2 weeks, the door speakers have gone out. about a week apart from each other, it is strange, they pop on every once in a while when i shut the door or hit a big bump or something but other than that they are just out. i dont know what it is, but i guess i will just replace them with some mbquarts, has anyone else had issues with this system. ?