Electromagnetic speakers are the grandparents of electrodynamic ones. The former emerged around 1860. However, it took over 40 years to develop the knowledge of acoustics, materials, math, and frequencies that gave birth to the kind of electrodynamic speakers that we know today. The then recent developments in vacuum tubes were extremely helpful for control of…
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Full-range speakers are devices that produces a wide variety of frequencies. Their design has great influence over the overall sound quality. A brief reminder of the physics in this situation tells us that experts measure sound frequency by the number of times that the audio signal rises and then falls within a second. Quality speakers…
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Subwoofer speakers have a peculiar arrangement and unique features. User set these subwoofers in separate compartments that cover about a three-octave range. The large wave-range within the subwoofer range might diffract around close objects, typically other subwoofer speakers. While full-range speakers are usually not faced directly toward each other, subwoofers find that assembly practical and…
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Woofer speakers, also known as bass speakers, are devices that can handle low to low-mid frequencies within the audio spectrum. The word woofer derives from the sound that dogs produce when they bark. The frequency of woofer speakers ranges from 40Hz to 500Hz. Here, remember that the lowest frequency sound that the human ear is…
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Mid-range speakers are devices that cover the middle part of the frequency spectrum. They cover the most important part of the audio spectrum, so they run from a range that goes from 500Hz to 4kHz. The human voice, as well as a wide variety of instruments, fall within this specific range. The reason for this…
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Tweeter speakers are audio drivers in a speaker system. They are a type of electromechanical loudspeaker that produces both sound and music at high frequencies. Hence, these devices create the upper range of a sound. Tweeter speakers are usually small. In addition, they produce short wave-length audio and have a tiny cone. Overall, they are…
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Coaxial speakers are systems in which the individual driver unit emits a sound from the same point of axis. There are two main types of this variant: compact and two-way high-power. This kind of speakers is popular in live concerts for on-stage foldback duties, which gives the performers a more even sound field. Compact Coaxial Speaker…
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A moving iron speaker, also known as a moving-coil loudspeaker, is one of the earliest types of speakers. It is an essential part of small size speakers due to their size and low-cost. Its design involves a ferrous-metal diaphragm, a permanent magnet, and an insulated wire. The Moving Iron Speaker: Mechanics The coil usually wraps…
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A magnetostatic loudspeaker is a dipole loudspeaker that has many similarities with the electrostatic loudspeaker. Magnetostatic loudspeakers use high currents. As the name suggests, their construction involves permanent magnets which function as a static magnetic field and wires that carry the audio frequency currents. In its composition, these wires are attached to a thin diaphragm.…
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In simple terms, magnetostrictive speakers derive from a magetostrictive property. This is a general property of ferromagnetic materials that causes them to change their shape or dimensions during the process of magnetization. The variation of the materials’s magnetization is due to the applied magnetic field changes of the magnetostrictive strain. Eventually, it reaches its saturation…
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