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LOUDSPEAKER

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The speaker is the component that deals to convert electrical energy into sound energy, then it belongs to the family of transducers. The transducers are always the weak link in the chain audio, because of the difficulty of their task: to transform a form of energy into another. Given the breadth of the range of frequencies that are required to play, the speakers are born with a propensity for one area of the full range audio and take this specific name: “Tweeter” the speaker dedicated to high frequencies, “Mid -Range “the frequency and medium-sized” Woofer “that of the low, and these are further divisions in the extreme range,” SuperTweeter “the speaker that handles the high frequencies and” Subwoofer “what is however only low. There are of various kinds that are distinguished by the principle of operation.

Electrodynamic system or Magnetodinamico
Speakers electrodynamic or magnetodinamici are the most common type on the market; equipped fact the vast majority of speakers sound.
Their operating principle is like for many transducers pretty simple: a voice coil is surrounded by a permanent magnet, the passage of electricity, alternately as the one that conveys information audio music, the filament coil it makes it attracted to a towards that direction or the opposite, a head is bonded to the membrane the speaker (usually a cone or a dome) shakes produced by the movement of vibrating membrane connects the surrounding air generating sound waves; happening here is that the transduction . Speakers Magneto / electro-dynamic transducers are great, robust and reliable, but because of the mass in motion (coil + membrane) have a considerable inertia, not so fast transducers. The search for materials particularly rigid but light has largely reduced the reaction time and damping in response to transients and their sound was particularly hot, more talented designers to achieve many of the speakers or monitor loudspeakers high – end more loved.

Electrostatic system
Electrostatic speakers work with a film (usually inert) dipped between two grids to get electricity alternating audio signal. The film is polarized by a transformer (these transducers require a power supply network) and, as happens to the voice coil in transducers described above, the difference in charge of the two grids, which are the polar opposite, attracts or rejects the film put Moving forward, so can the air molecules surrounding the vibration generating sound waves. The mass movement in this case is very small and hence the inertia. The answer to the transient is excellent and very rapid, which results in terms of listening in greater detail and sound in a higher definition. Unfortunately, as well as having an important also have the disadvantage of a low propensity for low frequencies and fragility due to the possible lacerabilità film if overloaded addition to the low efficiency level (low yield watt-decibel) are not very suitable for professional requiring a lot of pressure, especially on low frequencies. They may however be a good choice even if used in professional classical music, especially the most sensitive issue such as that chamber. Some designers have solved the bulk of the structural limitations of this type of transducer system combining an electrostatic transducer magnetodinamico specifically for low frequencies.

Belt System
Transducers tape:
like other tweeter transducers also has a belt membranes immersed in a magnetic field that reacts to changes polarity, transducers have always been very appreciated especially in the hi-fi, but their sensitivity has always prohibited to a widespread use in ‘Professional audio.
Times and technologies have evolved and thanks to researchers world-famous as the Doctor. Oskar Heil, the inventor of the transducer to tape new concept (Heil Air-Motion Transducer) the ribbon tweeter has finally become a robust and reliable.
And thanks to a pieghettatura accordion tape (a metal diaphragm) is able to lower the ratio to 1:4 of Loading, allowing the mobile part of being in front of a load of less than one quarter that of the other transducers, with the undeniable advantage of greater speed and agility of movement, which translates to listen in greater detail cleaning of transparency and sound. Remains a suitable treatment transducer frequency medium, high and very high but not at low frequencies.

– Alex Picciafuochi on behalf of http://www.smap.it