Although the same principles of operation, but the speakers still are divided into three main categories based on size and capacity, a subwoofer, high and medium.
Subwoofer has the largest size, is designed to reproduce low frequency sound. High speakers usually smaller, are designed to reproduce high frequencies. Also speakers reproduce high frequency range lies between the distance.
The division into different speakers actually also to some specific purpose. For example, to generate high frequency waves, the speaker diaphragm to vibrate faster, so the specialized high-frequency speakers can not have great size for the speaker membrane will have great weight. Conversely, it is difficult to make a small speaker vibration slow enough to create very low frequency sound by professionals to meet its capital faster frequencies.
Band
For sound quality in a certain frequency range to reach the desired effect, we divided the whole range into smaller ranges to each speaker separately. The high-quality speaker system so often have both woofer, mid and tweeter in an enclosure.
Of course, for each speaker, you play only a specific frequency range, the system must proceed to split the audio signal into different bands of low frequency range, high frequency and high frequency. This work was carried out by the assigned frequency (crossover).
Currently the most commonly distributed passive, meaning that this set of activities based on the audio signal through without any independent power supply. Fertilizers using this frequency inductors and capacitors, or sometimes more can vascular devices. Operation mechanism is mainly based on the principle of both capacitors and inductors become conductors only in a certain condition. For example, distributed capacitor is the perfect conductor when the frequency at a certain level, lower than this will result in less, while the opposite coil, a good indication when the frequency is lower than a certain level.
When electrical signals through wires to the speakers, it will be passed through the dispersion. In order to tweeter, current will pass through the capacitor. In order to subwoofer, current through inductors. Electrical signal to the speakers via a distribution center frequency will pass through both capacitors and inductors, thereby determining the intersection point of the upper and lower bands for the loudspeaker.
Sink can be made active dispersions. Frequency distribution of the active electronic device that can be of different frequency bands of audio signals before these signals to the amplifier (the speakers in each). Frequency distribution have an advantage over active passive dispersal in space can easily adjust the band. Frequency range of passive dispersal depends on separate circuits, so people will want to change need to replace capacitors and inductors. But an advantage but not actively dispersed by dispersal was common due to the cost of team equipment will cost much more.
The types of enclosures
In most speakers, the speakers and the frequency distribution is arranged in the same tank. The arrangement enables all in one speaker placement easier. Enclosures are usually made of wood or other hard materials and heavy security to cripple the island vibration operation process.
How well designed tanks have certain influence to the sound quality is created. Usually it comes to speakers, they usually focus only on the membrane will vibrate in speakers sound waves in front. But when the speaker diaphragm motion causes the air outside the front moves, it also creates air movement inside the box as well. Wave motion is called backward waves and different types of enclosures will be the opposite way of handling different waves.
The most common types of enclosures is as closed containers, also known as the barrel thoroughly sound, usually sealed to the air inside can not escape. Because the waves back in the box just around the speakerphone, so when the membrane moves, the air pressure inside and outside the box always change. Air flow in and out so tend to offset the pressure, pushing the film back speaker position "stable equilibrium", where the pressure inside and outside speakers are equal.
This type of enclosure design is less effective than the other designs by the amplifier will have to increase the signal to compensate for the impact force. In return, thanks to pressure equalization membrane speakers that always returns the correct location, creating a tight sound quality and more accurate.
Moving air force's internal speaker diaphragm will push air out the opposite hole, thereby adding to the overall sound level.
A number of other approaches designed to add a small hole on the speaker. In the speaker system (bass reflex), movement of air force's internal speaker membrane will push air out the opposite hole, thereby adding to the overall sound level. The main advantage is efficiency speaker. Movement force of the speaker membrane can affect the sound waves to create two threads instead of just one. However, the disadvantages of this design is that because there is no pressure to balance the sound is not exactly equal.
A different design is kind of passive negative feedback, which is commonly used in the manufacture of the subwoofer. Backward wave motion in the enclosure, instead of escaping through the hole will push the speaker membrane passive motion. Passive speakers have similar structural main speakers, not just roll music and is not connected to the amplifier. So only the speaker diaphragm motion based on backward wave generated by the main speakers. Enclosures of this type more efficiently and more accurately sealed speaker speaker.
Some negative feedback passive speakers are designed for active speaker and speaker on the other side passive. Two-sided design will spread in all directions sound, well suited to manufacture rear speakers in home theater systems.
However, this is only a few basic designs and the most common. The fact the market has made numerous style bins with enough structure and layout characteristics of each technology depends on it.
The other speaker technology
The speakers in the traditional conventional commonly known as the electrodynamic loudspeaker (dynamic). There is also a sound reproduction technology is another electrostatic speaker (Electrostatic speaker).
This makes the speakers vibrate air through a membrane broad, thin, able to conduct electricity. This film is suspended between two sheets of conductive material creates a fixed magnetic field with a cathode and the anode side. Electronic signal when the film will be constantly changing electrodes. When infected with a positive, it moves toward the cathode and vice versa.
This continuously moving layer of air vibrations create sound waves around. Because of light weight sheet should respond quickly and accurately by small changes in sound signal, creating the sound quality and very accurate. However, due to large amplitude motion, so the technology is not appropriate to create a subwoofer. Thus, electrostatic speakers are designed as medium or tweeter speakers and subwoofer are combined to improve the low frequency range.
A similar pattern is different from the speaker flat (planar magnetic). The speaker uses a strip of metal ribbon suspended between two sheets of magnets and similar activities such as electrostatic speakers, except the alternating current to the speaker diaphragm moves in a magnetic field instead of the electric field. As well as electrostatic speakers, flat speakers with good frequency response of high frequency sound, while the poor with low frequency sound. Therefore, it is commonly made tweeter.
Although both types are becoming increasingly popular with world music traditions, but the speaker phone is the most appropriate technology to date now. One can find this form everywhere, in all devices, from speakers to the clock, TV, telephones, computers, headsets ... enough diversity to prove even a single technology can easily create revolution in the modern world.
