Use the metal spudger to pry off the rubber bottom cover. It will be glued onto the bottom of the speaker.
Work the rubber cover off by slowly going all the way around with the metal spudger, applying as much force as needed.
Since the cover is glued, a heat gun at low temperature or a hair dryer may be useful to speed up the process. However it is not required in this step.
The casing should be easily removed by prying and lifting it off.
If the casing gets caught on the back panel of plugs, use the metal spudger to lift the casing away from the panel, working all the way around. Pay special attention to the bottom, where it may be stuck with glue.
Desoldering may be required to separate the circuit board completely. Please use our How to Solder and Desolder Connections Guide to properly and safely conduct this procedure.