Frequency Response: 28–24,000 Hz ±2dB Recommended Amplifier Power: 20‒400 watts per channel Horizontal Dispersion: 30° Vertical Dispersion: 48" (121.92cm) line source Sensitivity: 89 dB/2.83 volts/meter Impedance: Nominal: 6 Ohms Minimum: 2 Ohms. Compatible with 4, 6, or 8 Ohm rated amplifiers. Crossover Frequency: 250 Hz at 12dB per octave High Frequency Transducer: 48" (121.92cm) CLS™ electrostatic transducer Low Frequency Transducer: 10" (25.4cm) high excursion, high rigidity cone with extended throw drive assembly; sealed cabinet Components: Custom-wound audio transformers polypropylene bypass capacitors, 100% oxygen free copper coils. Audio Controls: Bass Control Switch: +2dB from 40-160 Hz Inputs: 5-way bi-wire binding posts Weight: 110 lbs. (50 kg)