Energy 5.1e speakers Very good condition. Great speakers! The ENERGY 5.1e speaker hosts a 1" soft dome tweeter, and two 7" Quadconcentric woofers. The front and rear vented cabinets delivers smooth and accurate bass down to 35Hz, and features the unique Spherex front baffles in their design. They can be configured for bi-wire or bi-amped hook-up with their 5-way binding posts. These speakers have received good reviews for their design and sound quality. Edward J. Foster of Sound & Vision Magazine (August 1995) gave them his Critic's Choice Specifications: Cabinet Design: Vented Tweeter: Ferro-Fluid Cooled 1 inch Soft Dome Woofer: 2 x 7 inch Quadconcentric Woofers, woven butyl surrounds Frequency Response (+/-3dB): 35Hz - 20KHz Anechoic Sensitivity: 87.5 dB SPL at 1 Metre/2.83v Impedance: 8 ohms Dimensions, H x W x D (approx. in.): 33 x 9 2/3 x 16 Finish: Black Ash Weight: 48 lbs (each) Sound and look fantastic In excellent cosmetic and working condition. Designed, Engineered and Made in Canada