To the left of the middle speaker (the large black component in the middle of the device), there will be a couple of wires.

Use the tweezers to remove the piece of tape to free the wires.

Next, to the right of that piece of tape is black electrical tape that needs to be removed.

Use the tweezers to remove the piece of black tape.

Don't worry if you rip any tape as you can add a new piece when putting the speakers back.