Great Sounding, Canadian Made Energy Bookshelf Speakers. Tested and 100% working. About the Pro Series of Speakers: The Pro-series by Energy give new meaning to Musical Truth. These full range speakers feature exceptional high-frequency resolution and at the same time effortlessly reproduce the lowest notes. Now, you have unlimited access to full musical bandwidth. And as you become one with the music you find yourself magically transported to an expanded soundstage. From armchair listener to featured performer, you soon find yourself centre-stage. This new series of speakers has a musical language all of its own, developed and evolved from a proud heritage. It draws upon the same technological superiority and advanced design philosophy as the famous “Energy” 22 and “Veritas” v2.8. Listen for yourself. Discover a new world of pinpoint imaging an expanded soundstage and incredible sonic realism.” This Mid-size Bookshelf speakers are rear-ported and boast 5-Way bindings suitable for banana plugs. Specifications: Design: Vented 2 Way Tweeter: 3/4 inch Soft Dome Woofer: 5 1/2 inch Injection Molded Diaphragm Frequency Response (+/-3dB): 52Hz – 20KHz Crossover Point: 2300 Hz Room Efficiency: 90 dB Anechoic Sensitivity: 87dB Maximum Power Rating: 130 Watts Impedance: 8 ohms (nominal) Dimensions; H x W x D (in) : 30cm x 18cm x 19cm Weight: 4,5 Kg each