Passive Bass Reflex 2 Way Desktop/Bookshelf Speaker Pair Heavy, sturdy build assures solid sound production without vibration distortion. Each rated at 125 watts PEAK. Normal power handling 75 Watts RMS each. 8 Ohm impedance. Two way ported 5 inch poly fiber woofer design with 3 inch silk dome tweeter. Rear woofer porting. Attractive wood grain finish with removable cloth grilles. Kicking bass and crisp highs brings music to life. Recommended power range: 15 to 75 watts RMS per channel.