Gently pull the entire black housing away from device.

Locate where the speakers' wires are connected to the motherboard.

Using wire cutters, sever the wires connecting the speaker to the motherboard. Strip the wires with a wire stripper and fashion the new wires to the old ones connected to the motherboard to reconnect.

You may use a soldering tool to disconnect the wires from the motherboard and to reconnect the new wires back to the motherboard.