The SW-150 Subwoofer from Wharfedale offers a level of performance previously unheard of in its class striking the perfect balance between power and sound quality. Revolutionary drive units amplifier modules and filter stages feature on every model of Wharfedales SW Series of subwoofers. In each model it is possible to switch off all filters and allow the AV processor to control the effective frequency range of the subwoofer. This is preferable in high-end systems.