The HF1000 I believe is quite different, still, it is working tweeter, better than a dead one!
As mentioned, think there are different impedance versions of HF2000. You would have to check, I can't remember!
A good DC resistance does not always imply a good HF2000, have a good read of that vintage radio forum link, some good advice there. Kat's one good HF2000 turned out to be duff as well!