right speaker makes strange noise

The PowerBook's right- and left-channel speakers are located in the back right and left corners of the base, respectively, while the midrange-enhancing third speaker occupies the back-middle area of the base under the display hinge.

Here's wher to get the part: http://www.PowerBookmedic.com/xcart1/pro...

Here's what the part looks like: http://www.PowerBookmedic.com/xcart1/pro...

Here is a tear down to the logic board. You would be on your own from there. This appears to be a very difficult replacement requiring tear down to almost the bare case. Consider just opening it up and clipping the speaker wire.