Summary: Type: subwoofer; The number of bands: 1; Sensitivity: 88 dB; Frequency range: 38 - 4000 Hz; Housing: no; Additional information: Diffuser sputtered metal of the highest quality. 2 inch Kapton voice coil. Chrome basket of high rigidity. Voice coil ventilation. Gold-plated connectors. Sensitivity of 88,+3 dB. Fo - 53 Hz. Impedance Is 4 Ohms.; ...