The speaker with grill attached.
These are based on the Pi Speakers 3 Pi design. They are intended for PA use in live acoustic music concerts. Compared to most commercial speakers in the $250-$500 price range their sound is far better, without the big peak found at about 300hz in most Peavey and JBL pro speakers. Also, the treble extension is flat to 20khz, without the rolloff above 14khz found in commercial speakers.