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The most common type of driver, commonly called a dynamic loudspeaker, uses a lightweight diaphragm, or cone, connected to a rigid basket, or frame, via a flexible suspension, commonly called a spider, that constrains a voice coil to move axially through a cylindrical magnetic gap.
Loudspeaker efficiency is defined as the sound power output divided by the electrical power input. Most loudspeakers are inefficient transducers; only about 1% of the electrical energy sent by an amplifier to a typical home loudspeaker is converted to acoustic energy. The remainder is converted to heat, mostly in the voice coil and magnet assembly.
Sixteen ohm drivers (or loudspeakers systems) would be connected to the 16-ohm tap, 8 ohm to the 8 ohm tap, etc. This is significant since the ratio between the loudspeaker impedance and the amplifier's impedance at a particular frequency provides damping (i.e., energy absorption) for the back EMF generated by a driver.
In a dynamic microphone, the diaphragm is glued to a magnetic coil, similar to the one in a dynamic loudspeaker. (In fact, a dynamic speaker can be used as a rudimentary microphone, and vice versa.) [3] The diaphragm in a microphone works similarly to the human eardrum.
Pages for logged out editors learn more. Contributions; Talk; Electrical characteristics of a dynamic loudspeaker
This is currently quite hard to achieve, and so the ideal loudspeaker systems for stereo reproduction would have a uniform dispersion at all frequencies. Listening to sound in an anechoic "dead" room is quite different from listening in a conventional room, and, while revealing about loudspeaker behaviour it has an unnatural sonic character ...
Conventional loudspeaker transducer designs use the input electrical audio frequency signal to vibrate a significant mass: In a dynamic loudspeaker this driver is coupled to a stiff speaker cone—a diaphragm which pushes air at audio frequencies.
Advantages of electrostatic loudspeakers include: the very low mass of the diaphragm, which is driven across its whole surface; exemplary frequency response (both in amplitude and phase) [citation needed] because the principle of generating force and pressure is almost free from resonances unlike the more common electrodynamic driver.