Of all the components are the audio speaker system, where the major differences. We can not have a full set of screens at affordable prices with a great sound to give, but on the other hand, some models of the best known brands cost more than $ 50,000 for a couple. We can make big differences in size from small baffle type understand that being on a shelf, fences over 2 m high, in spite of hundreds of kilograms. There is a technologicalreasons for this difference, or just thought about the project? An obvious answer is that the bass speaker really necessary. It is effective, but it seems more intuitive as a legitimate response. The fact is that the principles for the implementation of display and the electro-acoustic transducers, as a rule, which is composed, is relatively unknown to the common for music lovers to give the technical ideals that are comparable to the remaining parts of trendAudio equipment such as amplifiers, CD players, equalizers, etc.

We note that there are only a few decades ago it was unaware of the problem that there will be a strength, electric or acoustic transducer in a flap. Measures such as frequency response, cone excursion, impulse response, group delay, a phase delay, it was not possible to predict the system manager deflector, and the final product is the result of long experimentation with attachments different volumeports, damping, etc. That's because until recently there has been a preferred mathematical model for the behavior of electro-acoustic transducer in the diaphragm.

The dynamic speaker, has been largely unchanged since its invention in 1925 by Rice and Kellogg, two engineers at General Electric Research Laboratory. Technological progress has improved its manufacturing process, material and the cone, the strength of the magnet, but the physical principleremained unchanged: a membrane combined with a coil inside the magnetic field of a permanent magnet, which varies because of the alternating current applied to the coil. This simple principle, which allows the production of sound in almost all the mysteries of the market. Plasma and electrostatic speakers, among others, an alternative way to produce sound, but because of physical limitations and techniques, which had little market penetration.

The advent of sound film was agreater incentive for this sector, but the deflector transducer system remains a mystery. It was not until 1972 that Richard Klein, based on earlier work by Neville Thiele, published in the Journal of the Audio Engineering Society, a series of articles on system analysis baffle in sealed box and breezy with a circuit equivalent. Significance of this is to confuse the system as a transducer equivalent electrical circuit with a type of RLC, which is already known and the modelpredictable consequences. Now, with the assistance of Thiele-Small parameters, the names of each sensor, we can predict their behavior in the diaphragm, without the construction of the screen.

One of the Thiele-Small equations gives us an indication of the size of the panel, its frequency response and efficiency, which can be described as: the efficiency (N0) is proportional to the cube of resonance frequency (FS), multiplied for the relevant quantity (VAS). This means, for example, if weto get an extra octave of bass in a reduction of R in a factor of two, while efficiency (N0), we must increase the volume (Vas) by a factor of eight. This explains why it is so difficult to reach frequencies of 25 Hz, and because he needed a large diaphragm to deliver the bass.

So you choose a small speaker, for both simple and costs are usually offer a wide selection of low. Instead, people who chose the big screen for thethe expense of aesthetics, will undoubtedly experience more vivid and realistic and entertaining musical.

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