If the pop came from inside the speaker cabinet: you may well have blown up a crossover capacitor. I've replaced a lot of popped electrolytics over the years. Have all the drivers stopped working, or just the woofer, mid or tweet? If the speaker has a fuse, it's most likely mounted on the terminal strip. If you're careful, you can probably remove the woofer and inspect for disconnected wires, or damage to the crossover. It's possible that all the drivers blew simultaneously, but unlikely. If you see no damage on the crossover, test the drivers with an ohmeter or a AA battery(just make a brief connection).