Features an Aluminium Basket with A Great Aerodynamic Structure! Voce AV 6.5 Woofer Originating directly from the experience of the Thesis line components, the Voce woofer features an aluminium basket with a great aerodynamic structure, a cotton-fiber paper pressed cone with Light Damping treatment, a Triple Wave surround in butyl rubber, and an extremely light Copper Clad Aluminium Wire coils. Features: The profile of the aerodynamic basket’s spokes along with the open-air design ensures a drastic reduction of back-wave reflections. The exclusive Butyl rubber Triple Wave surround profile provides full linearity as well as reliable performance under extreme conditions. Extremely lightweight and compact, the CCAW (Copper-Clad aluminum Wire) voice coils wound on a double layer provide very high efficiency and neat, dynamic sound. Cotton-fibre pressed paper cone with Light Damping treatment. The Radial Venting System ensures high thermal capability, power handling, and reliability. Specifications: Size: 165mm Power Handling - Peak: 200W Power Handling - Continuous: 100W Impedance: 4-Ohm Frequency Response: 50 ÷ 7k Hz Voice Coil Ø: 30mm Voice Coil Material: CCAW Woofer Qes: 0.82 Xmax: 3mm Weight: 1.20kg