Reproduction system Coaxial 2-way PMI-PP cone woofer 100 mm Metalised PEI balanced-drive tweeter with neodymium magnet 25 mm Powerful strontium magnet for dynamic bass response ? Music peak power (W) 140 Continuous power (W) 30 Fs (Hz) 100 Qts 1.10 Vas (Litres) 2.5 Frequency response (Hz) 45~32,000 Efficiency (db/W/m) 90