What is a Loudspeaker?
The unique aspect of the loudspeaker is the driver used to produce sound. It is basically a coil of wire, a magnet and a basket that houses sound creation and production. In most cases, copper wiring is used to create the voice coil. In other cases, silver or aluminum is used in higher end models to help produce an even more crisp sound. Depending on the design of the loudspeaker, magnets used to help flow sound production vary from size-to-size and type. When basket design comes into play, the frame must be large enough to keep the voice coil and magnet from striking the hull of the unit and each other. Least expensive baskets are designed out of plastic and molds as opposed to metal. During the design, the voice coil is typically stationed towards the smaller end of the cone-shaped basket. There is a gap which allows it to move back and forth to produce and expend sound. A spider, used as a suspension system, so to speak, helps keep the magnets and the coil in sync with one another a
A loudspeaker is simply a device that converts electrical energy into sound that is amplified so that it can be heard from a greater distance than the original sound would allow. There is no difference in usage of the terms speaker and loudspeaker and both are often used interchangeably. Some loudspeakers are capable of producing sounds over a wide range of frequencies and some are only made to reproduce certain frequencies. While it may seem as though it is more desirable for a loudspeaker to transmit over the widest range of frequencies possible, there are advantages to those which have a limited range. Due to the size of the system needed to reproduce the broad spectrum of frequencies well, it may be harder to find a compact loudspeaker that can adequately handle the task. Therefore, many speakers trying to do all frequencies may do a substandard job of sound reproduction. Having multiple speakers, with some specializing in different ranges of sound frequencies, offers some advantag
Loudspeakers are found in all sorts of sizes because they are used in telephones, in headphones, computer loudspeakers, in radios, television and stereo equipment. But the principle of a loudspeaker is largely the same irrespective of its design. Figure 9. A typical loudspeaker unit with a large moveable membrane. It is the membrane, which makes the air move, and the membrane is controlled with the help of an electromagnetic signal (just like in the Figure 4 on page 3). Look at the figure below. The big membrane moves with the help of the coil, which is suspended in a powerful magnetic field. When we apply alternating current to it, the membrane will vibrate in time to the pattern of the current. Choice of loudspeaker The ideal loudspeaker would have to reproduce the complete range of tones from 20 to 20.000 Hz. And it should be neutral which means, that it must not add to or take away from the sound. It must reproduce the recording exactly. In practice, there arent any loudspeakers th
