They had a round horn loaded mid and small tweeter horn like the T 35. The magnets were alnico. Truthfully If I named the model number it might not be accurate since it's been a while since I sold them. I thought they had a nice presentation but somewhat limited on the extremes. And that slightly cardboardy sound on the bass. Your set might be different; the 15" is; I am told a better unit. What do you hear?