The SR9040 surround speaker is your answer for remarkable, immersive, room-filling sound so you can experience every detail of pure home theatre. Its Bipolar speaker dispersion pattern provides enveloping surround sound, tremendous dynamic range as well as true high-definition sound quality, which results in total sound field immersion. Timeless, minimalist design. This is what obsession sounds like. Powerful L/R Bipolar speaker dispersion pattern for wider, more immersive surround sound Easy to use and built for unobtrusive placement in any room Iconic and visually powerful design features Totally inert, resonance-free cabinet structure Aluminium Dome Tweeters Crystal clear highs bring the most demanding audio to life. Definitive Technologies tweeters play higher in frequency than what is heard by the human ear, creating an authentic reproduction of sound as the artist intends in the studio or concert hall. BDSS – Balanced Double Surround System Improves driver excursion which results in the selected driver producing bass output usually associated with a larger driver, while retaining the improved dispersion and midrange definition of a smaller driver. Totally Inert, Resonance-Free Cabinet Maximum rigidity with strategically placed bracing improves imaging while reducing resonance, further reinforcing their clean and powerful sound. Powerful L/R Bipolar Speaker Dispersion Pattern Provides enveloping surround sound, tremendous dynamic range as well as true high-definition sound quality, which results in total sound field immersion. Acoustically Transparent Grille Enjoy the subtle elegance of the speaker design without having to remove a speaker grille to enjoy natural, uncoloured sound. Technical Specifications:- Height: 241.3mm Width: 198.4mm Depth: 136.7mm Materials: Aluminium Front Array Driver Complement: 2x 1" (25.4m) d (Round) Aluminum Dome - Tweeter 2x 3.5" (88.9mm) d (Round) BDSS Bass - Mid/Woofer Nominal Impedance: 8 ohms Recommended Amplifier Power: 20 - 150w Total Frequency Response: 50 Hz → 40 kHz Max Sensitivity (1 watt @ 1 meter): 92 dB Cabinet Warranty: 5 years Drivers Warranty: 5 years