Specs method : 3 way , 3 speaker , sealing method , book shelf type Used unit For low-pass : 30 cm (12") cone type (JA - 3102) For mid range : 10 cm (4") semidom type (JA - 1210) For high regions : 3 cm (1.5") dome type (JA - 0533) Playback frequency band : 40 Hz to 20 kHz Crossover frequency : 700 Hz, 6 kHz (12 dB / oct) Lowest resonance frequency : 50 Hz Impedance : 6 Ohm Output sound pressure level : 91 dB / W / m Maximum allowable input : 70 W Rated input : 35 W Internal volume : 50 L Level control : Mid-range, high-frequency continuous variable weight : 24 kg / each