You would have to take the speaker apart, drill a mounting hole for one of these https/www.mouser.com/ProductDetail/?qs=t8%2F5FiDdxGZU3J8GgPv5Yw%3D%3D
also called a closed circuit stereo jack. You would have to solder some wires from the speaker to it and back for it to work.
You know how to solder right?
You would have to take the speaker apart, drill a mounting hole for one of these https/www.mouser.com/ProductDetail/?qs=t8%2F5FiDdxGZU3J8GgPv5Yw%3D%3D
also called a closed circuit stereo jack. You would have to solder some wires from the speaker to it and back for it to work.
You know how to solder right?