I do not know which speaker this woofer goes to.
Overall diameter 15 inches, cone is 12" dia.
Speaker works, cone in good shape,
but I know something is wrong with it, I just can't remember what;
it has been sitting in a box for 40 years,
I was going to put it in the U.S.Pioneer display stand but never had the time to play with it.
given away at yard sale.