The negative terminal clip snapped off of my HD 300 centre channel speaker. I contacted the local Klipsch service centre and they are shipping me a replacement terminal cup. I've never replaced a terminal cup and I'm not familiar with the procedure. What tools will I need, will I have to open the speaker housing and will I have to solder anything? Are there any schematics of this model of speaker available so I can at least figure out how to open it without damaging it (if needed)?