AV 1.1The AV 1. 1 tweeter features a very light Tetolon membrane, CCAW voice coil wound on double layer and high density Neodymium magnet. The advanced design and engineering dedicated to the rear damping chamber with annular geometry and the magnet area, along with the attention for the selection of the materials, resulted in a frequency response on the lower limits, a reduced harmonic distortion, along with a live, natural, rich in detail sound. Tetolon