Model Ventura 5 Type Two-way Sealed box HF Unit (Fluid Cooled Aluminium) 25mm Tweeter LF Unit 130mm (5.25in.) Effective Frequency Range +/– 3dB 60Hz - 20kHz Crossover Frequency 3.8kHz Characteristic Sensitivity Level (at 1m on axis for an input of 2.83v) 89dB Recommended Amplifier Power 10 -100 Watts Nominal Impedance 6Ω Net Weight 3.3kg (7.25lbs) Operating Temperature Range -40⁰C to 70⁰C (-40⁰F to 158⁰F) Dimensions, Cabinet only (H x W x D) 262 x 197 x 189 mm (10.3 x 7.75 x 7.4 in.) Dimensions, With bracket and knobs (H x W x D) 262 x 197 x 235 mm (10.3 x 7.75 x 9.25 in.)