The Aegis Evo 3 (width 7.56 inches) by Acoustic Energy are Main / Stereo Speakers with a good efficiency alloy cone, a frequency response of 36 Hz - 22 kHz and 150 Watt peak power. This model can be mounted on a book shelf or Floor Standing Tower, and features an impedance level of 8 ohm and 90.5 dB sensitivity, as to be able to deliver clear sound levels.