The NS-333 2-Way Bookshelf Speaker system, this versatile two-way speaker functions beautifully in front, rear, or both positions, they're also wall-mountable. Its 5 woofer and 1 Aluminum dome tweeter set a soundstage that achieves impressive efficiency and dynamic range in any size space. Whether the listening occasion calls for a symphony orchestra or battlefield drama, this model can summon either with equal conviction in any two-channel or multi-channel audio system. Includes: Yamaha NS-333 5in 2-way 150W Bookshelf Speakers - 2x Speakers - Yamaha Warranty Features: Two Way Bass Reflex Bookshelf Speaker System: This System is designed specifically for home theater applications. The bookshelf speaker is a bass-reflex design that can be used for main or surround channels and incorporates a 5 PMD cone woofer and a 1 aluminum dome tweeter. Waveguide Horn: Unlike most homes, movie theaters use sound absorbing materials on walls and ceilings. The result is that the sound reaching your ears is the sound wave produced by the speakers rather than reflected off the walls. Internally Wired with Monster Cable: Yamaha has chosen to ensure optimum sound quality by internally wiring some of the components with Monster Cable. This ensures a clean, clear signal from the crossover network to the speaker driver. Magnetic Shielding: The speaker is magnetically shielded, so it can be placed on a TV or video monitor without degrading the picture via stray magnetic fields. Performance Enhanced by a Handsome Cabinet: The EF series speakers are enclosed in an Elliptical Form cabinet with a high gloss black piano finish, which provides solid construction with minimal sound diffraction. New Grill Design: New grill design and grill cloth provide an attractive and acoustically transparent protective cover for the drivers. Specifications: Recommended Usage: Surround Speakers Type: 2-Way Bass Reflex Design Woofers: 5 PMD Cone Tweeters: 1 Aluminum Dome With Waveguide Horn Magnetic Shielding: Yes Frequency Response: 65 Hz - 35 kHz Sensitivity: 87 dB/2.83 V/1 m Impedance: 6 Ohms Input Power (Maximum / Nominal): 150W / 60W Dimensions (W x H x D): 7-7/8 x 12-5/8 x 8-3/8 Weight: 12.1(lbs. each)