Hi, I have this old Marshall Cabinet in my cellar, i used it like 15 years ago for guitar playing. Too bad it isn't working anymore , i think there's a problem with the wiring of the input jack, its rusted. When i opened the cabinet i saw these speakers. I already did some little research and of what i found this should be bass speakers? They should have a '444' label but i can't see it. Can anyone put a positive ID on these guys? Thx!