Stereoplay in Detail: the Full Range Chassis by Audiodata\r

The Jolie of Audiodata\r is (fortunately) not a classic wide band system. The rather small 10 cm external diameter cone remains electrically unlimited only upwards, below 250 Hertz, two bass drivers provide relief.
Full range chassis, which cover the entire musical spectrum with only a membrane, can strictly speaking do not properly work. Large and heavy diaphragms are needed for low notes, towards the top, it is reversed. The lowest audible frequencies have wavelengths of up to 20 meters, the highest are a few centimeters short.
You must be not a physicist to imagine that a membrane oscillating piston-shaped (so at all frequencies as a whole) gets arge problems depending on the material and size on at least one end of the spectrum.
That can be as large, can study with kitchen radio. Their primitive, cramped in semi-open plastic bowls full range chassis sound almost always cruel. So it is easily overlooked that the design promises also benefits despite prophecies of doom.
You is very close to the ideal of the point source and knows no spatial offset in principle. The problems of multi way speakers with angle dependencies and time errors by crossovers are eliminated as far as possible. In some areas, wide strips are even coaxial systems superior, who want to be often elaborately wired and their closely neighboring drives like each other to spit in the soup.
The Jolie of Audiodata\r is (fortunately) not a classic wide band system. The rather small 10 cm external diameter cone remains electrically unlimited only upwards, below 250 Hertz, two bass drivers provide relief. His natural, given by the diaphragm diameter usage area ranges from approximately 300 to 7000 Hertz.

To make the driver suitable for high-frequency, some tweaks were needed. The glass fiber membrane is structured so that only the inner part oscillates at higher frequencies, the area is so small, the radiation is thus pleasantly wide. The approximately 20 mm high dust protection cover simple paper acts as a mechanical tweeter.

A strong drive counteracts the natural energy waste in the direction of high frequencies. Associated adverse camber between 5 and 8 kilohertz is balanced by a correction circuit (a kind of suction circuit). That may sound about a little adventurous works, how the measurements show, but quite excellent.

 

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