Common for the magnets to fall off the speakers. To remove the speaker- you will see 2 round "buttons" on 1 side of the speaker. On each button, there is a small round piece in the center, about 1/4" diameter. Bress the center piece downward with a small screwdriver. It will go down about 1/8" This releases the button and you can pry it out. Remove both buttons and lift out the speaker. Easy. To reinstall the buttons, first push the center piece back up so it sticks out slightly, put the button back in, push the center back flush, locks it in place. Can't help you with speaker source other than dealer. By the way, these are tweeters and don't emit a lot of sound to begin with.