Step 1
Remove the speakers from the cabinet, if applicable. Cabinet styles vary, so check the unit's manual. Screws are commonly located on the front and can be removed with a screwdriver, allowing the speaker horn to be pulled out.
Step 2
Clean the cabinet thoroughly with a slightly damp cloth. All-purpose spray cleaner can be used on most surfaces. Just be sure to wipe it dry immediately, especially on wood.
Step 3
Cover any part of the cabinet that you do not want painted with paper, using masking tape to hold it in place and to provide a neat edge. If the speaker cabinet has a non-removable cloth grille, cover it completely.
Step 4
Trim the edges of the masked area with a utility knife so the lines are clean.
Step 5
Spray the exposed area with primer, making sure the area is well-ventilated and that the surrounding surfaces are covered in newspaper. If you will be painting the cabinet a dark color, use a tinted primer. Dry completely, and repeat if necessary.
Step 6
Paint over the dry primer coat with spray enamel. Allow to dry completely, and spray a second coat if necessary. Let that coat dry as well.
Step 7
Remove the tape and paper. Re-install the speakers, if applicable.