Pinnacle Studiophile AV20. Tweeter size: 25.4 mm, Woofer size: 50.8 mm, Magnet type: neodymium. RMS rated power: 20 W, Frequency range: 60 - 20000 Hz. Speaker interface type: RCA. Driver cone material: Polymer fibre. Type: Bookshelf, Audio output channels: 2.0