Voxativ Fullrange Driver AC-4X

Voxativ builds all full-range drivers by themselves. Only the highest quality materials are used, and all assembly and calibration is done manually in Germany. Voxatives subjects all drivers to a 24-hour endurance test and inspect them again very thoroughly before they are dispatched. This ensures that you receive a premium product built to the very highest precision. It results in a sound which is a delight to experience, even for those with little interest in hifi. The world premiere of these drive units appeared in 2013 - The fullrange drive unit AC-4x is equipped with a cone made of real wood. Although the new cone has the same moving mass as the predecessor of Japanese calligraphy paper, it's stiffness is 100 times higher. The use of a more powerful magnet system also leads to considerable sound improvement. The audio impression is breathtaking: a much stronger bass response and in mids and highs there are more clarity and details. The result is nothing less than the best full range unit of the world ! Starting in January 2013 the Ampeggio Signature is be equipped with the new drive unit AC-4x. Obviously, this cone is also available for our AC-Xp driver in the Ampeggio Due. Retrofit to other drivers on request. Price is for a pair. Specifications Voxativ AC-4X Frequency response 20 - 20,000 Hz Efficiency 101 dB / 1W / 1 m in recommended housings Capacity 50 W nom / 100 W mus Impedance [R] 10.5 Ohm Complex impedance [Z] 16.0 Ohm Resonance frequency 39.0 Hz Mechanical Q-factor Qms 3.31 Electrical Q-factor Qes 0.40 Q-factor Qts 0.36 Equivalent volume [VAS] 76.0 Ltr Xmss 10 mm Depth 7.5 cm Install diameter 7.5" / 19.0 cm Weight 4.9 kg