BeoVox 4500 Passive Loudspeakers Designer: Gideon Lindinger-Lowy Colours: Aluminium with Grey or Blue Frets Long-term maximum input power 90 W Maximum noise power 45 W Impedance: 8 ohms Frequency range +4 -8 dB 75 - 20,000 Hz Power at 94 dB SPL 5 W Sensitivity 1 W 87 dB Cabinet principle: Bass reflex Woofer: 13cm Tweeter: 2.5cm Crossover frequency 3500 Hz Net volume 5.4 litre Dimensions W x H x D : 45 x 38 x 8cm Weight 5.2kg per unit. The elegant, flat panel loudspeakers were created to hang on the wall. And with their calm surfaces of blue or grey fabric coupled with polished steel, they could be taken for works of art. But the design was only partly for visual effect. The form of the panel speakers was founded on an advanced, acoustic principle that uses the wall as an active part of the sound reproduction process - without causing the wall itself to vibrate. There are some visible signs of ageing, please be inspired by pictures. Will be carefully packed and shipped with T&T.