FRWJ FRWS 4 ND - 8 ohm FRWS 4 ND, 8 OHM FRWS 5 - 4 ohm FRWS 5 - 8 ohm FRWS 5 4 OHM FRWS 5 4OHM FRWS 5 8 OHM FRWS 5 8OHM FRWS 5 R 8 OHM