The ALPHA series offers a range of speakers with a steel chassis, copper coil, and paper cone. It features a KAPTON coil support and a ferrite magnet. The membrane suspension is made of plasticized linen with a paper dust cap. - Magnet: Ferrite - Category: speaker - Chassis: steel - Coil diameter: 38 mm - Speaker diameter: 6" - Speaker impedance (?): 8 ? - Weight (kg): 1.86 kg - Power: 100 W - Frequency response: 95 Hz - 6 kHz - Sensitivity: 93.6