[. . . ] [. . . ] The secret is that the outer casing of this component is moulded from rigid polystyrene while the inner lining is Fibrecrete. q The Environmental controls located on the back of the midrange head assembly are specially developed by B&W. These controls enable the user to make the subtlest of adjustments, compensating for such factors as peculiarities of listening room conditions and the unusual balance that sometimes occur in digital recording. q The superb high frequency driver has a motor diaphragm assembly which operates as a diminishing-size sound source as frequency increases. This advanced technique results in vastly superior high-frequency dispersion, high power handling capacity and a new order of transient behaviour in the 8Hz to 20kHz region. Drive Units 1 x 26mm multi-filament polyester weave dome; 26mm dia. high temperature voice coil 1 x 100mm Midrange frequency drive unit; 25mm voice coil 2 x 165mm low frequency drive units; 38mm voice coil Power Handling Minimum amplifier 100 watts into 8 ohms No upper limit due to automatic protection device. Dimensions Height: 1040mm Width: 300 Depth: 370mm Finish Walnut, teak, black ash, light oak or rosewood Frequency Response 55Hz to 20kHz ±2dB Sensitivity 85dB spl (2. 83V 1m) Nominal Impedance 8 ohms B&W Loudspeakers Ltd reserves the right to amend details of the specifications without notice in line with technical developments. [. . . ] [. . . ]