Hi Guys, Happy New Year! I had a blown tweeter diaphragm in my db 412, received the new diaphragm and installed it ( I have done this before ) put the tweeter back in the cab and got nothing, I also noticed that the top 2 speakers were not working as we'll, anybody have any clues? Bad crossover? The bottom 2 speakers work fine. Also I can hear noise coming out of the tweeter that sounds like an air leak when it's turned up. Any help is appreciated, thank you!