This website uses cookies to ensure you have the best experience. Learn more

Types Of Loudspeakers Essay

986 words - 4 pages

There are two types of loudspeakers, Electrostatic and Electromagnetic these two loudspeakers have different aspects and qualities. The use of which on is based on the buyer but if not knowing what each ones pros and cons are buying one may be difficult.

Electrostatic speakers use a thin flat diaphragm usually consisting of a plastic sheet coated with a conductive material such as graphite sandwiched between two electrically conductive grids, with a small air gap between the diaphragm and grids. For this speaker to operate without distortion there needs to be a constant charge running through the speaker rather than a constant voltage.

The grids must be able to generate a stable electric field, while still allowing for sound to pass through the stator plates (Grids). To generate sufficient field strength, the audio signal on the grids must be of high voltage. The electrostatic construction is in effect a capacitor, and current is only needed to charge the capacitance created by the diaphragm and the stator plates. This type of speaker is therefore a high-impedance device. In contrast to the modern electromagnetic cone speaker is a low-impedance device, with higher current requirements.

Advantages of electrostatic loudspeakers include levels of distortion one to two orders of magnitude lower than conventional cone drivers in a box, the extremely light weight of the diaphragm which is driven across its whole surface. Since many electrostatic speakers are tall and thin designs without an enclosure, they act as a vertical dipole line source. This makes for rather different acoustic behaviour in rooms compared to conventional electromagnetic loudspeakers.

Generally speaking, a large-panel dipole radiator is more demanding of a proper physical placement within a room when compared to a conventional magnetic speaker. Electrostatics can also be executed as full-range designs, lacking the usual crossover filters and enclosures that could colour or distort the sound.

Disadvantages include sensitivity to ambient humidity levels and a lack of bass response, due to phase cancellation from a lack of enclosure. There is also the difficult physical challenge of reproducing low frequencies with a vibrating taut film with little excursion amplitude. Maximum bass levels cannot be augmented because they are ultimately limited by the membrane's maximum permissible excursion before it comes too close to the high-voltage stators, which may produce electrical arcing and burn holes through it.

The directionality of electrostatics can also be a disadvantage in that it means the 'sweet spot' where proper stereo imaging can be heard is relatively small, limiting the number of people who can fully enjoy the advantages of the speakers simultaneously. Because of their tendency to attract dust, insects, conductive particles, and...

Find Another Essay On Types of Loudspeakers

I Am a Musician. How Can I Protect My Ears?

1572 words - 7 pages Occupational noise is commonly considered in environments such as manufacturing and construction industries but tends to be a forgotten issue for musicians who often regard high sound levels as essential elements to their career. Because hearing sensitivity is central to optimize any musician’s career, noise-induced hearing loss is an occupational hazard. Protecting musicians from harmful noise is unique compared to other types of hearing

Techniques and Technologies of the Recording Studio

1918 words - 8 pages order to keep outside sounds from entering the room and getting on tape. The studio is also designed to keep internal sounds form leaking out and disturbing the surrounding environment. There are many types of studios. They vary in size, shape, and acoustic design in accordance with the personal tastes of the owners (Huber 1). For example, a studio that records a great deal of rock music might be small in size with highly absorbent walls. On the

Acoustical Problems in Theatrical Spaces: Acoustic Systems that can Help

2350 words - 9 pages processors, and loudspeakers to create reflections and reverberation in addition to those produces by the naturally‐occurring sound field. 2 The acoustic properties can be changed instantly, and the enhanced acoustic properties of the auditorium can typically be varied over a wider range than can be produced by variable passive techniques. [3] The design of active acoustics follows that of passive approaches, but rather than the physical

Market Research

1425 words - 6 pages suppliers can achieve higher responses giving away a free gift in return for the completion of a survey. This method usually only provides a very low response. This is a very cheap method of research, it also avoids the problem of the interviewer to being biased and it allows more time to think about answers. The types of questions, which are used in questionnaires. Questionnaires are to find out about: people’s opinions, factual

My Personal Statement: Bachelor’s Degree in Mass Communications

1632 words - 7 pages daunting a task it is to writing a personal statement. They would have do all this to make a good personal statement. “People sometimes imagine that just because they have access to so many newspapers, radio and TV channels, they will get an infinity of different opinions. Then they discover that things are just the opposite: the power of these loudspeakers only amplifies the opinion prevalent at a certain time, to the point where it covers any other

Effectiveness of Propaganda

1621 words - 7 pages entertainments displayed Nazi ideas. The fundamental message was that Hitler was the saviour of Germany and it was the duty of every German to obey him without disobedience. Thus a significant way of spreading propaganda was through the modern use of radios. It was compulsory to listen to Hitler’s speeches; so loudspeakers were installed in public places. Anyone who criticized propaganda or did not listen to radio broadcasts risked of being arrested

Communications in Large Businesses

1969 words - 8 pages · Telephones with hands free/loudspeakers · E-mail · Videoconferencing · Videophones Scott Bader use videoconference equipment to communicate between their three European manufacturing sites. Emails are Lotus Notes. Their LAN covers all buildings at Wollaston. All these channels and types of communication can be used to express both confidential and open communication; Scott Bader will have to make sure

i am country boy kids

1373 words - 5 pages ; other types of pants such as slacks, short pants, and bell-bottom type jeans are not acceptable.(G) Stocking1. Female members are not allowed to wear silk stocking.2. Members are required to wear stocking which covers the ankle.(H) Shoes1. Members are only allowed to wear sport shoes or canvas slippers; slippers are not acceptable (unless the member is injured but he/she must submit a medical certificate to Discipline Department).(I) Others1. During


3021 words - 13 pages exists an English Room that has a smart board, loudspeakers, projector, internet, computers, whiteboard, posters and English books. These resources make the students feel immersed into a different environment related to the English culture. Following the idea of Chomsky (1965) students feel comfortable in the English Room, because the learning becomes something innate and natural as they are directly exposed to the language. They are surrounded by

Use of Headphones Can Cause Hearing Problems for Teenagers

2016 words - 8 pages Headphones are duos of small loudspeakers held close to an operator’s ears and associated with a signal source such as a radio, CD player, mp3 player or iPod. Teenagers/Individuals whom expose themselves to excessive sounds via headphones for a long time can damage their hearing/ear. There are plenty benefits and limitations of science in creating the technology [music players] for people’s usage of earphones such as volume limits and etc

The Negative Impact of Media Censorship

2572 words - 10 pages them that can be interpreted as “obscene”. Once someone finds something, the creator of the work has no choice but to delete, edit, and basically censor the offending portion, otherwise it never gets to see the light of public consumption. Censorship has been used for all different kinds of works, for all different kinds of reasons. The many examples of album covers provided at TabooTunes show different types of covers deemed “inappropriate”, and

Similar Essays

Music And Technology Essay

983 words - 4 pages home, but you would only hear it at home not anywhere else. Then they were able to hear music on the Television and radio. Until eventually they would hear music everywhere thing for intents iPods, head phones, stereos, and computers were made to listen to music share types of music and hear music in privacy if you preferred. Some devices were made for much more than just music like computers and iPhones they have more than just one use. Not

The Secret Life Of Sound Perception

2453 words - 10 pages (“Loudspeaker”). Aided with the new amplification technology C.W. Rice and E.W. Kelley were able to invent “the first ‘modern’ loudspeaker” which operates by “convert[ing] electrical signals into audible sound” (“Loudspeaker”). Early loudspeakers were not perfect and amplified both the original signal and elements of distortion that were caused by the speaker itself. To correct this Harold Black created a way to reduce distortion by using three

The Physics Of Sound Essay

1459 words - 6 pages disadvantages with both types of loudspeakers, but they tend to be too technical and require too much expertise to be explained in short here. Without regard to price, it can be assumed that the electrostatic speakers paired up with a woofer would be the first choice for audio quality oriented consumers. The light and widespread diaphragm provides clearer and more precise sound reproduction with a greater surround effect than what one would get from standard electromagnetic speakers.

Phsycological Warfare Essay

2283 words - 9 pages in time of conflict. In this environment, psychological warfare aims to lower the morale and efficiency of enemy forces (Hunter). Psychological warfare is a bloodless, inexpensive, sometimes unethical and ineffective means of "wounding" the enemy (Pease xiii). It is accomplished through the use of leaflets and loudspeakers (Pease 8).      Consolidation psychological operations are designed for use on civilians