FRW 10 N - 8 OHM FRW027-471J FRW0H105ZF FRWBS68 FRWJ FRWS 4 ND - 8 ohm FRWS 4 ND, 8 OHM FRWS 5 - 4 ohm FRWS 5 - 8 ohm FRWS 5 4 OHM