I have a sr124-dvc powered by a c500.1. The sub is in a 1.21 cu ft sealed enclosure. I bought that enclosure cause polk listed that size in the description on their main page. I look in the owners manual and it says that it calls for a .88 cu ft enclosure which is much smaller than what I have it in. I am a bit concerned now. What do you guys recommend I do and what size box sounds best with this sub. I am not sure I am getting the best performance out of the sub.