#Loudspeaker

While it’s difficult to isolate any one part of a loudspeaker when it comes to ensuring proper alignment and operation, in this article, we’ll focus on the voice coil assembly.

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For a loudspeaker to faithfully reproduce a sound, it’s critical that the cone moves directly in and out of the frame in sync with the drive signal.

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SPL is typically measured using decibels (dB), which are derived by considering the ratio of a given pressure with some reference pressure.

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Typically, on a loudspeaker driver specification, an input power rating is specified. Most often, there are 2 numbers reported –average power and peak power specs. Although the essence is the same, an engineer sourcing a driver for a given application: telecom, fire and safety, telematics, among others, has a slightly different perspective than your average … Continue reading “Input Power”

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Impedance is characterised by two components: resistance and reactance.

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This driver is suitable for use in products intended to be compliant to UL217.

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A dynamic receiver is an acoustic transducer and while it shares many of the same electroacoustic parameters and subcomponents as the loudspeaker driver there are also some differences.

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What is Santoprene? Santoprene is a rubber-like material that can be used to make a speaker cone or gasket in a loudspeaker. Santoprene is often used when a lower resonant frequency is desired. With a look a feel similar to rubber, Santoprene provides a more flexible and simple design suitable for easier manufacturing. The graphic … Continue reading “Audio Dictionary: What is Santoprene”

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So, modeling a loudspeaker driver’s low frequency performance is readily accomplished with an analogous R-L-C circuit. But these circuit components are amalgams of the interaction between the electrical, mechanical, and acoustic aspects of this energy conversion. Interestingly, though, Thiele, Small, and several other audio researchers and engineers have determined an ingenious methodology for gleaning these … Continue reading “Thiele-Small Parameters: The Measurement”

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Let’s discuss the effect of adding an enclosure around a driver.

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There’s always been a bit of a black art to loudspeaker design. The battle between form and function rages in this field. Several animated discussions have been had over the years concerning what some view as an acoustic delight and what significant others view as a garish monolith. And that’s not even getting to what … Continue reading “Thiele-Small Parameters: The Big Picture”

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Like any engineering venture, the choice of material for a loudspeaker diaphragm, also referred to as a cone due to its typical contour, comes with a set of trade-offs that will impact performance. Often, the benefit of a given material for one performance goal poses a setback for another purpose – or purposes. Even for … Continue reading “From the Loudspeaker Diaphragm”

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