Elegant design and advanced engineering come together to produce the ultimate musical listening experience. The top-of-the-range fact model combines new materials, innovative aerodynamic engineering, groundbreaking vibration-cancelling design, cutting-edge cabinets and drivers, PMC's patented Advanced Transmission Line (ATL™) bass-loading technology and state-of-the-art looks to create a loudspeaker which adds no sound of its own to the music it reproduces. This is why we call it... ... the loudspeaker you’ll never hear Available Finishes: Tiger Ebony, Rich Walnut, White Silk Crossover Frequency:3.8kHz & 380Hz Dimensions:H 1700mm (66.9”) x W 370mm (14.6”) x D 623mm (24.5”) including binding posts Drive Units: LF — 6.5” transverse-weave, carbon-fibre, multicellular-core piston driver MF — 75mm rear-chambered, soft-dome driver isolated in nest mount HF — 19.5mm, SONOMEX™ soft-dome, ferro-fluid-cooled driver with 36mm wide surround, neodymium magnet, micro custom chassis, silicone Aureole™ isolation mount Effective ATL™ Length:2 x 2.4m (7.9ft) Frequency Response:23Hz - 25kHz Impedance:4 Ohms Input Connectors:Hex-Rhodium 4mm binding posts (3 pairs) accepting 4mm plugs, spades & bare wire sensitivity:86dB @ 1W, 1m Weight:80kg (176 lbs) each, including plinth