Specs Power Handling : 100 Watts unclipped speech and music Frequency Range : 51 Hz – 25 kHz Impedance : 4 Ohm nominal Sensitivity : 88dB / 2.83V at 1m Amplifier Compatibility : 20 – 100 Watts Ideal Positioning : Not less than 10 cm (4”) from rear wall Tweeter Driver : Epos 25mm soft dome Tweeter Material : high-temperature voice coil, ferrofluid cooling and neodymium magnet system. Magnetically shielded. Bass/Midrange Driver : Epos mid bass 150 mm, Bass/Midrange Material : 25mm high-temperature voice coil and polypropylene cone. Magnetically shielded Crossover : Bass and tweeter cross over with 2nd order filters. Tweeter network : uses Metal Oxide resistors, polypropylene film capacitor and air-core inductor. Woofer network : a large-core laminated-iron inductor and polypropylene film by-pass capacitor. Terminal Panel : Gold-plated and Bi-wirable. Can be single or double wired by removing shorting links provided. Internal wiring : 18 AWG stranded cable. Cabinet : 18mm MDF wrap and front baffle, extensively braced internally Finish : Cherry vinyl veneer Grilles : Removable ‘audiophile’ grille fitted as standard, Alternative cloth-covered grilles are packed as accessories Dimensions (HxWxD) : 12.2 x 7.2 x 9.7 Inches Weight : 5.89 kgs per single speaker