Wharfedale's new EVO4 has grown out of the extensive research and development that produced the ELYSIAN flagship loudspeakers and borrows much of the technology involved in ELYSIAN. The primary focus is on the AMT development resulting in a radically different way of reproducing high frequency detail efficiently and accurately. Similar cabinet technology to ELYSIAN provides a stable and solid foundation for the drive units with radiused edges to help integrate the driver output with the room acoustics. In addition the unique SLPP bass reflex system, as developed for ELYSIAN, is now incorporated in EVO4. Includes: EVO4.CS Dual 5 2-Way Center Channel Speaker (White Ash) - Grille - 4x Self-Adhesive Rubber Feet - Pair of White Cloth Gloves - User Manual - Wharfdale 5 Year Limited Warranty Features: 2-way center speaker Specifications: Color: White Ash Speaker Type: 2-way center speaker Enclosure Type: Bass reflex Transducer Complement: 2-way Bass Driver: 5 (130mm) Black Woven Kevlar Cone x2 Treble Driver: 30x60mm AMT AV Shield: No Sensitivity (2.83V @ 1M): 89dB Recommended Amplifier Power: 25-100W Peak SPL: 103dB Nominal Impedance: 8 Ohm Compatible Minimum Impedance: 4.4 Ohm Frequency Response: 50Hz - 22kHz (+/-3dB) Bass Extension (-6dB): 45Hz Crossover Frequency: 2.7kHz Dimensions (H x W x D): 7.28 x 33 x 10.8 (18.49 x 83.82x 27.43cm) Weight: 25.5 lbs (11.5kg)