Reproduction system Coaxial 2-way PMI-PP cone woofer 165 mm Metalised PEI balanced-drive tweeter with neodymium magnet 25 mm Powerful strontium magnet for dynamic bass response ? Music peak power (W) 200 Continuous power (W) 40 Fs (Hz) 65 Qts 1.00 Vas (Litres) 15.5 Frequency response (Hz) 28~32,000 Efficiency (db/W/m) 91