1/4'' ding / chip on a glossy black speaker

Try to find a local furniture repair woodworker. It will probably be very costly to be returned to as new condition if that's even possible, but they should be able to make it look much better for a more reasonable cost.

Before you do anything you'll need to find out what kind of paint is on the speaker and if it has a clear coat. Once you have that, try a body shop and/or a place that does powder coating.

Try black auto touchup paint (usually in the little glass vial with a small brush). I've used this to touch up a black electric guitar ding and it can work. Use multiple coats and wet sand with small grit followed by some car wax to fine finish it.

"06-05-15: Wolf_garcia
Try black auto touchup paint (usually in the little glass vial with a small brush). I've used this to touch up a black electric guitar ding and it can work. Use multiple coats and wet sand with small grit followed by some car wax to fine finish it."

Something like that can work but you must know what kind of paint is on the speaker before you start. Its very common to come across different types of paint that won't work together.

Enamels and epoxy paints can be applied to any other type of
paint. Most enamels don't sand or rub out as nicely
though(too soft). Lacquers have more aggressive thinners that
will cause problems, if applied to other paint systems.
Power coat? LOL! Power coatings are electrostatically
applied(sprayed/surface has to conduct electricity) and then
baked, at almost 400 degrees(F). Unless your cabinet is
metal: forget about it!