These are the renown Energy e series .
8 ohms
55-20,000 hz +- 3dB
-10 dB @ 50 hz.
These sound really nice with the typical e series "warm" highs that will not tire the ears during extended listening. In good condition with minor scuffing typical to their age and intact grills(minor hole in grill one see image.) Foam surrounds have tons of life left in them. Get 'em while they last , which won't be long.