Tangent EVO E4. Tweeter size: 25 mm, Woofer size: 100 mm. RMS rated power: 150 W, Frequency range: 55 - 20000 Hz, Impedance: 8 Ом. Type: Bookshelf, Audio output channels: 1.0 This is an auto-generated long summary based on the first three features of the first five feature groups.