HomeProductFloor Standing and BookshelfReference SpeakersRockport Avior IIRockport Avior II Specifications Frequency Response: 25 Hz – 30 kHz (-3 dB) Sensitivity: 89.5 dB SPL / 2.83 V/m Nominal Impedance: 4 ohms Minimum Amplifier Power Recommendation: 50 watts Cabinet Dimensions: Height 46.5″, Width 15″, Depth 24.5″ (base) Weight: 220 lb (≈100 kg) each