Single 12" part # 1270, single 41/2" mid (same as the 4 in the elevens), single 11/4" dome tweeter. slots on front, running top to bottom on one side. again mirror image;
98 db, 25-24khz + - 3 db' crossover points 400hz and 4khz; this pair requires some work as one of the 12's is blown; one mid is blown and the other not original; the tweeter don't match but do sound close. I did hear them before the mid blew. I liked it much more than a pair of jbl 4410's that I had just given to friends; even with mismatched drivers; I slapped in a 12" audiobaun subwoofer as temporary replacement; reminded me of B&W 801"s which I have owned; but much more efficent. Great box's and crossover's; size is about 29" x 18" x 19" ; wieght about 90lbs.