When it comes to making a component speaker worth listening too, you have to think outside of the box. Thats what we do at Soundstream, and that is exactly what we did for 2014. The AC.6 uses non-traditional driver material to be innovative but also sound amazing. Everyone knows paper sounds better, but we use an aerated paper cone for a lighter, stronger cone resulting in a very natural sound. The tweeter in this set uses a PST (puffed silk tweeter) this results in the strongest and lightest silk tweeter on the market without adding any weight, thus being more efficient.