Do any of you know what has to be done in order to replace the woofer? I know that you can unscrew the old one, but are the wires soldered in to the rest of them? How hard would it be for a person with soldering experience, or would I be better off taking them to somewhere I know that will do a good job. I bought them from tweeter, but I don't know if they will do it, I know they do custom car audio, who knows, I am gonna stop by there tomorrow.