Summary: Type: coaxial speaker; The number of bands: 2; Power: 35 W (nominal), 140 W (maximum); Sensitivity: 91 dB; Frequency range: 30 - 21000 Hz; Additional information: Impedance 4 Ohm. Butyl rubber suspension of the diffuser to improve the durability and improving sound quality. As diffuser holder of stainless steel.; ...