Summary: Type: subwoofer; The number of bands: 1; Power: 250 W (nominal), 500 W (maximum); Sensitivity: 90 dB; Frequency range: 25 - 1500 Hz; Housing: no; Additional information: The diffuser is made in the form of "sandwich "w", the three-layer technology, top and bottom layers of glass fiber, in the mid - syntactic foam. The recommended option acou ...