The OPTICON 2 MK2 is a compact stand mount speaker delivers remarkable bass performance for its size that integrates perfectly with the inherent midrange and high frequency quality of its drivers. Patented SMC - Dali's patented SMC magnet motor minimizes hysteresis to significantly reduce electro-acoustic distortion. Reflex Ports - The OPTICON MK2 dual-flare reflex ports minimize turbulence and effectively reinforce low-frequency performance. Assembled By Hand - DALI stereo pairs are built and tested by one technician using components from the same batch to ensure visual and acoustic matching. Made in Denmark - At Dali's Danish production facilities, they hand-assemble, test and QA everything from cutting the laminate to surface finishing. Frequency Range [+/- 3] dB [Hz] 59 - 25,000Hz Sensitivity [2.83V/1m] [dB] 86.5dB Nominal Impedance [ohms] 4 Ohms Maximum SPL [dB] 107dB Recommended Amp. Power [Watt] 30 - 150W Crossover Frequency [Hz] 2,000 High Frequency Driver 1 x 29 mm soft dome Low Driver / Mid Range Driver(s) 1 x 6.5" Bass Reflex Tuning Frequency [Hz] 46Hz Dimensions (H x W x D) 13.8" x 7.7" x 11.7" (351mm x 195mm x 297mm) Weight 20.3lbs (9.2kg) Sold in pairs and the price includes shipping to many places in Canada. Download a product brochure