Loudspeakers

In the piston range of a driver (before the cone exhibits oscillations other than those induced by the motion of the voice coil in the magnet), a loudspeaker acts as a high pass filter (HPF). The resonant frequency of a speaker, f0 (pronounced: F-naught), is the frequency below which a loudspeaker is increasingly unable to … Continue reading “Resonant Frequency”

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In electrical parlance, impedance, Z, is the characteristic of a device that causes a reduction in the amount of current, I, for a given voltage, V, in a circuit. It’s generally described by the equation: Typically, this impedance is characterised by two components: resistance and reactance. Since resistance is the same under DC or AC … Continue reading “Loudspeaker Impedance”

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Buffalo, NY, Friday August 3, 2018 :  Stetron is pleased to announce the development of a 520Hz low frequency new miniature loudspeaker designed especially for the Fire Alarm and Protection Industry. This driver is suitable for use in products intended to be compliant to UL217. This low profile driver has a small foot print of 57 … Continue reading “Stetron announces the development of a new 57mm (2.25”) 520 Hz low frequency driver for UL217 applications”

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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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