Description Still compact but with increased cabinet volume and driver size for even more potency, the Wharfedale DIAMOND 12.2 offers a little more from a traditional standmount (or bookshelf) speaker format and embodies the history and performance values of the Wharfedale DIAMOND series. Perfect for larger rooms and more powerful 2-channel hi-fi systems, the DIAMOND 12. features a high-performance 150mm (6.5”) Klarity - TM driver for extended, tight bass, and a superb 25mm (1”) woven polyester dome tweeter for open and smoothly extended high frequencies. Specification General description 2-way bookshelf speaker Enclosure type bass reflex Transducer complement 2-way Bass driver 6.5"(150mm) advanced PP Cone Treble driver 1"(25mm) Textile Dome AV shield No Sensitivity(2.83V @ 1m) 88d - B Recommended amplifier power 20-120W Peak SPL 96d - B Nominal impedance 8Ω Compatible Minimum impedance 4.0Ω Frequency response(+/-3d - B) 50Hz ~ 20k - Hz Bass extension(-6d - B) 43Hz Crossover frequency 2.0k