hi, after searching for more information on the speaker i came up with 12" {4 ohm not 6 ohm } jbl full range speaker 100 watts. the same speaker that was in the leslie 18 also came in the leslie solid state model 860 . i still cannot find model number info? is there alot of jbl models that fall in the 12"4 ohm full range 100 watt catagory? thanks for any help, michael floyd