Wilson Audio Alexandria XLF

Wilson Audio Alexandria XLF Loudspeaker, Obsidian Black and my XLF builds on the strength and success of the Alexandria Series 2 yet raises the bar on performance in every meaningful parameter: greater dynamic contrast, better harmonic expression, deeper bass, greater linearity.
Specifications
Enclosure Type Woofer: XLF Port, adjustable rear or front firing
Enclosure Type Midrange: Rear Vented
Enclosure Type Tweeter: Sealed
Woofers: One – 13 inch, (33.02 cm); One – 15 inch, (38.10 cm)
Midrange: Two – 7 inch (17.78 cm)
Tweeter: One – 1 inch silk dome (2.54 cm)
Super Tweeter: One – 1 inch silk dome rear firing (2.54 cm)
Sensitivity: 93.5 dB @ 1 watt @ 1 watt @ 1 kHz
Nominal Impedance: 4 ohms/minimum 3.2 ohms @ 1 Hz
Minimum Amplifier Power: 7 Watts per channel
Frequency Response: +/-3 dB 19.5 Hz – 33 kHz
Overall Dimensions: Height – 70.25 inches, (178.44 cm); Width – 19.8125 inches, (50.38 cm); Depth – 27.875 inches, (70.80 cm)
Approx. System Weight Per Channel: 655 lbs each (297.1 kg)
Total Approx. System Shipping Weight: 1910 lbs/pair