so whats the deal with the 2 bulbs...?
Are you referring to the long glass tube dealies? Those are fuses. If you look at the element that runs inside the glass tube? can you determine it to be continuous or broken? If it appears broken, then it's blown,ergo? no tweeter. Fuses are there to protect the circuits frmo burning out. They will pop off if overloaded.The fuse value will be imprinted on the cap ends,or just take it to an electronics shop and they'll no doubt be able to replace them. Buy a few.

