Magnetically shielded. Tweeter: 25mm magnesium alloy dome. Magnetically shielded. Crossover: Symmetrical third order at 3kHz. Power Handling: Compatible with amplifiers rated at up to 200 Watts into 8 Ohms Frequency Response: 70Hz - 22kHz ±3dB Sensitivity: 88dB for 2.83V at 1m Nominal Impedance: 8 Ohms Total Harmonic Distortion: Typically less than 0.3%, 200Hz to 20kHz Power Compression: Less than 1dB for 16dB gain at 250Hz Dimensions (H x W x D): 295 x 180 x 255mm Weight (single speaker): 8kg T