In the house I purchased in 2007, the previous owner left a custom built wall unit containing a large screen (73" DLP) TV, circa 2001. He modified the bottom of the TV cabinet, adding a pair of what look like in-wall speakers, taking over for what the TV came with. He left no documentation for these speakers, so I have no information on what they are or who made them. My only clue is a small logo stuck to the lower left corner of the speaker, consisting of a cursive "S", in green on a black background (see photo).
Can anyone tell me who the manufacturer might be?