ONKYO Dolby Atmos-enabled speakers (2 units) Black D-309H (B) Type: 2-way sealed / 10cm N-OMF cone woofer  1,2cm balanced dome tweeter  1 Rated impedance: 6 / maximum input: 80W / rating sensitivity level: 83.5dB / W / m / frequency response: 70Hz ~ 38k Hz / cabinet volume: 1.5L Dimensions (one): Width 142  height 136.5  depth 238.5mm / mass (one) 2.2kg Accessories: Speaker Cable 3m  2, slip sheet  2, cushion  8 Multilingual manual URL (PDF):http://www.jp.onkyo.com/support/manual/manualpdf/D-309H_JaEnFrCsAr.pdf