nominal impedance4 ohmssensitivity83db (2.83v/lm)frequency response90hz-27khz (+/-6db)130hz-27khz (+/-6db) with back cancrossover response3.5khzdrive unitslh: 75mm (3in.) uni-qhf: 16mm (0.6in.)recommended amplifier power10 - 50wproduct external dimensionsdiameter: 136mm (5.4in.)depth: 57mm (2.2in.)depth: 110mm (4.3in.) with back cancut-out dimensionsdiameter: 118mm (4.6in.)mounting thicknessceiling thickness (maximum): 22mm (0.87 in.)ceiling thickness (minimum): 6mm (0.24 in.)mounting depth from surface52mm (2in.)103mm (4.1in.) with back cannet weight0.50kg (1.10lbs)0.65kg (1.44lbs) with back can
