Yamaha NS-777 3-Way Bass Reflex Tower Speaker NS777 (each) High sensitivity and wide dynamic range for contemporary digital sources Waveguide horn allows the sound field to be shaped and controlled for optimal spatial expression in home theater environments Polymer-injected Mica Diaphragm cone woofer combines high-performance materials and design for extreme accuracy Highest quality internal Monster Cable wiring High frequency response dome tweeter delivers clear, natural highs Bi-wiring connectivity Beautiful Yamaha piano finish with elegant elliptical form Dual 8" PMD Cone Woofers 5" Mid-Range Driver with Waveguide horn 1" Aluminum Dome Tweeter with Waveguide horn Magnetic Shielding Highest Quality Internal Monster Cable Wiring Bi-Wiring Connectivity Banana-Plug Compatible Terminals Frequency Response: 30€“35000 Hz Sensitivity: 89 dB/0.283 V/1 m Input Power (Maximum/Nominal): 250 W/100 W Impedance: 6 ohms Dimensions (W x H x D): 10 7/8" x 43 5/16" x 15 3/8"/ 276 x 1100 x 390 mm