Fully handmade with matching pair Full Range Quasi Ribbon, True Ribbon Tweeter Frequency response: 35Hz - 40KHz Sensitivity: 86dB @ 2.83V / 1 Meter / 500Hz Resistance: 4Ω Dimensions: 180cm x 61cm x 4,5cm (H x W x D) Weight with packaging: 66 Kgr Made in USA Trim Finishes: natural oak, black, matt or black matt aluminum Cloth Finishes: white, dark gray, black Trim Finishes: dark cherry Cloth Finishes: white, dark gray, black