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Topic: Plasma arc loudspeaker

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Loudspeaker

Spark gap

Corona

Transmission line

Operational amplifier

Diffraction

Differential amplifier

	Loudspeaker Summary
		The term loudspeaker is used to refer to both the device itself, and a complete system consisting of one or more loudspeaker drivers (as the individual units are often called) in an enclosure.
		In loudspeaker specifications, one often sees a speaker classified as an "N-way" speaker where N is a positive whole number greater than 1, indicating the number of separate frequency bands into which the system divides the sound (not the number of drivers, as one frequency band may be handled by more than one speaker driver).
		Most loudspeakers have two wires that must be connected to the source of the signal (the audio amplifier or receiver).
	www.bookrags.com /Loudspeaker (0 words)

	plasma tv wall mounts
		Presenting all aspects of plasma science and plasma tv wall mounts technology for the general public, educational, and plasma tv wall mounts research communities.
		Science of the plasma and plasma tv wall mounts the technology - fundamental principles - description for the temperature (or the energy), a sure crystal of the plasma declares produced in the coalition for science of the plasma supplies the educational guide and plasma tv wall mounts banns of teaching.
		Plasma 2003 of the plasma of Cakewalk 2003.
	highdensitytelevision.net /plasma-tv-wall-mounts (2451 words)

	Roger Russell's Ionophone Ionovac Page
		It was not until 1946, however, that a French inventor by the name of Siegfried Klein (pictured at the right) thought of confining the arc to a small quartz tube and coupling it to a horn.
		He maintained that such an arc could be used for generation of subsonic or ultrasonic waves as well as a microphone or loudspeaker.
		The throat of the quartz element is 1/4" in diameter and is directly coupled to the exponential horn that is attached to the box The rectangular horn mouth measures 6" by 1-9/32".
	www.roger-russell.com /ionovac/ionovac.htm (0 words)

	Acapella Audio Arts Violin Loudspeakers (High Version) by Tony Maresch
		Plasma ion tweeters are the evolution of William Duddells' "singing arc" which was first shown in London, England in 1900.
		The Plasma Ion Tweeter works by first stabilizing an arc and then agitating the ions by changing the temperature in its small chamber, which causes the arc to expand and then contract, and therein lies the push and pull of the arc, which moves air at high frequencies.
		Although the Plasma Ion Tweeters are horn coupled to improve dispersion (and amplitude) they are still somewhat directional and listeners will find experimenting with toe-in important to getting the sound just right for their own balance between pin-point precision and soundstage.
	www.enjoythemusic.com /magazine/equipment/1002/acapellavoilin.htm (2457 words)

	Speakers
		The term loudspeaker is used to refer to both the device itself, and a complete system consisting of one or more loudspeaker '''drivers''' (as the individual units are often called) in an enclosure.
		A loudspeaker is commonly mounted in an enclosure (or cabinet).
		One problem with loudspeakers is that the essentially- planar form of most loudspeakers creates a soundwave that is somewhat directional, that is, the intensity of the sound produced varies depending on the listener's angle relative to the central axis of the speaker.
	www.seattleluxury.com /encyclopedia/entry/Speakers (5206 words)

	NationMaster - Encyclopedia: Loudspeaker
		The term loudspeaker is used for both individual devices and for complete systems consisting of one or more drivers (as the individual transducers are often called) in an enclosure, often with a crossover circuit.
		The term loudspeaker is used to refer to both the device itself, and a complete system consisting of one or more loudspeaker drivers (as the individual units are often called) in an enclosure.
		In loudspeaker specifications, one often sees a speaker classified as an "N-way" speaker where N is a positive whole number greater than 1, indicating the number of separate frequency bands into which the system divides the sound (not the number of drivers, as one frequency band may be handled by more than one speaker driver).
	www.nationmaster.com /encyclopedia/loudspeaker (746 words)

	Loudspeakers -- Woofers -- Tweeters -- Subwoofers
		Flat panel loudspeaker designs also lend themselves to being electrostatically driven rather than via the usual electromechanical voice coil, thereby giving a more linear response; the disadvantage, however, is that the signal must be converted to a very high voltage low current, which can be problematic for reliability and maintenance.
		watt measured at one metre from the loudspeaker.
		The cables that are used to connect the loudspeaker to the amplifier will have an impact on the sound quality, which is often a subtle loss of definition and detail.
	www.edinformatics.com /inventions_inventors/loudspeaker.htm (3805 words)

	Loudspeaker (Site not responding. Last check: )
		Because of effects such as resonance and various inertial effects, a single loudspeaker is not usually used to cover a wide range of frequencies: instead, a number of specialized units are employed.
		The major role of the enclosure is to prevent the negative phase soundwaves from the rear of the speaker combining with the positive phase sound waves from the front of the speaker.
		Other types of enclosures attempt to improve the low frequency response or overall efficiency of the loudspeaker by using various combinations of reflex ports (these enclosures may be refered to as vented enclosures, the interior of such enclosures tends to be lined with fiberglass batting for absorbtion), transmission lines and horns.
	www.casimiro.com /wiki/en/wikipedia/l/lo/loudspeaker.html (1570 words)

	Loudspeaker - Biocrawler (Site not responding. Last check: )
		Because of effects such as resonance and various inertial effects, a single loudspeaker is not usually used to cover a wide range of frequencies; instead, a number of specialized units are employed known as the drivers of a speaker.
		An 'open baffle' loudspeaker is an approximation to this - the transducer is mounted on a simple board of size comparable to the lowest wavelength to be reproduced.
		Other types of enclosures attempt to improve the low frequency response or overall efficiency of the loudspeaker by using various combinations of reflex ports to transmit the energy from the rear of the speaker to the listener; these enclosures may be referred to as vented enclosures, bass reflex, transmission lines or horns.
	www.biocrawler.com /encyclopedia/Loudspeakers (3689 words)

	Loudspeaker (Site not responding. Last check: )
		The efficiency is measured as dB/(W·m)—decibels output for an input of one nominal watt measured at one metre from the loudspeaker usually on the axis of the speaker.
		One problem with loudspeakers is that the essentially-planar form of most loudspeakers creates a soundwave that is somewhat directional, that is, the intensity of the sound produced varies depending on the listener's angle relative to the central axis of the speaker.
		Since plasma has minimal mass, but is charged and therefore can be manipulated by an electric field, the result is a very linear output at frequencies far higher than the audible range.
	www.toolhost.com /Loudspeaker.html (6273 words)

	Fault locating system for electric cables and the like - Patent 4291204
		This arcs over the fault and the current flow through the line and the arc causes a rapidly rising magnetic field which produces a "thump" that can be detected by a receiver coil, or by a sonic pickup.
		This object is achieved by causing an arc to form at the fault which produces arc plasma that appears to the test signals as a very low resistance as long as it is sustained.
		While the arc plasma is present, a sufficiently low voltage exists across terminals T.sub.1 and T.sub.2 to forward bias diodes 78, 79 and 80 and allow bias current I.sub.b to flow through switch 76, the diodes and resistor 81 and through the established arc.
	www.freepatentsonline.com /4291204.html (7921 words)

	Loudspeaker
		The loudspeaker driver's mass and compliance, ''i.e.'' the stiffness of the suspension of the cone, determines the resonanceresonant frequency and damping properties of the system, which affect the low-frequency response of the speaker; the response falls off very sharply below the cabinet resonant frequency (Fcb).
		The efficiency is measured as dB/(W·m)andmdash;decibels output for an input of one nominal wattnominal watt measured at one metre from the loudspeaker usually on the axis of the speaker.
		One problem with loudspeakers is that the essentially-Plane (mathematics)planar form of most loudspeakers creates a soundwave that is somewhat directional, that is, the intensity of the sound produced varies depending on the listener's angle relative to the central axis of the speaker.
	www.territoriopc.com /eng/loudspeaker.php (3718 words)

	Loudspeaker Information - Articles Free (Site not responding. Last check: )
		Loudspeakers are used in numerous applications from hearing aids to air raid sirens.
		Loudspeaker drivers are commonly mounted in an enclosure, or cabinet.
		The sound pressure is measured at (or scaled to be equivalent to a measurement taken at) one meter from the loudspeaker and on-axis or directly in front of it under the conditions that the loudspeaker is radiating into an infinitely large space and mounted on an infinite baffle.
	www.articlesfree.com /index.php?title=Loudspeaker (7854 words)

	Brainboost - loudspeaker
		A loudspeaker is an electro - mechanical transducer that uses a voice coil rigidly connected to the diaphragm or cone.
		The classic loudspeaker is of the moving coil - permanent magnet type.
		The most common type of loudspeaker is the MOVING COIL speaker, where a coil of wire is suspended in the magnetic field of a circular magnet.
	www.brainboost.com /search.asp?Q=loudspeaker&lfmq=1 (223 words)

	Loudspeaker - TvWiki, the free encyclopedia (Site not responding. Last check: )
		Because of effects such as resonance and various inertial effects, a single loudspeaker is not usually used to cover a wide range of frequencies; instead, a number of specialized drivers are employed.
		Image:Bassreflex-Gehäuse (enclosure).png Other types of enclosures attempt to improve the low frequency response or overall efficiency of the loudspeaker by using various combinations of reflex ports to transmit the energy from the rear of the speaker to the listener; these enclosures may also be referred to as vented/ported enclosures, bass reflex, transmission lines or horns.
		The most exotic speaker design is undoubtedly the plasma arc loudspeaker, using electrical plasma as a driver [3], once commercially sold as the Ionovac[4].
	www.tvwiki.tv /wiki/Loudspeaker (3827 words)

	Loudspeaker at AllExperts
		The term loudspeaker is used to refer to both the device itself, and a complete system consisting of one or more loudspeaker drivers (as the individual units are often called) in an enclosure.
		In loudspeaker specifications, one often sees a speaker classified as an "N-way" speaker where N is a positive whole number greater than 1, indicating the number of separate frequency bands into which the system divides the sound (not the number of drivers, as one frequency band may be handled by more than one speaker driver).
		loudspeakers) are actually complex 3D shapes such as cones and domes, but most can be approximated (at least at low frequencies) as a planar form that creates a soundwave that becomes more directional as frequency increases, because the wavelength of the soundwave becomes small compared to the size of the diaphragm.
	en.allexperts.com /e/l/lo/loudspeaker.htm (6766 words)

	Bambooweb: Loudspeaker
		The traditional design is in two parts, a fibrous semi-rigid cone and attached to the apex of the cone is a coil of fine wire (usually copper), called the voice coil or moving coil.
		Because of effects such as resonance and various inertial effects, a single loudspeaker is not usually used to cover a wide range of frequencies: instead, a number of specialized units are employed.
		The major role of the enclosure is to prevent the negative phase soundwaves from the rear of the speaker combining with the positive phase sound waves from the front of the speaker.
	www.bambooweb.com /articles/l/o/Loudspeaker.html (1245 words)

	Plasma burners (Site not responding. Last check: )
		Plasma burner provided with an electrode holder for the support of a cently arranged electrode and an outer electrode, a device for applying an electrical voltage for producing an electric arc between the electrodes and a device for the supply of gas to the electric arc area of the electrodes.
		Plasma burners are utilised in a series of areas for such purposes as the rapid heating of surfaces, melting of materials, heating of solid and liquid materials and conducting chemical reactions at temperatures above those which can be obtained conveniently by other types of heating.
		An advantage of plasma burners according to the invention where the electrodes burn submerged in a melt, is thus that by adjusting the position of the rod electrode relative to the pipe electrode, one can control which voltage level the burner is to operate with.
	www.sacnewsmonthly.com /invent/tongs_having_torque_indicator_thereon/plasma_burners.html (3279 words)

	Loudspeaker - Wikipedia, the free encyclopedia
		The term loudspeaker is used for both individual devices and for complete systems consisting of one or more drivers (as the individual transducers are often called) in an enclosure, often with a crossover circuit included as well.
		Loudspeaker drivers are commonly mounted in an enclosure, or cabinet.
		The sound pressure is measured at (or scaled to be equivalent to a measurement taken at) one meter from the loudspeaker and on-axis or directly in front of it under the conditions that the loudspeaker is radiating into an infinitely large space and mounted on an infinite baffle.
	www.a013.com /wiki/Loudspeaker (8155 words)

	Loudspeaker with improved diaphragm
		This invention relates to loudspeakers, and, more particularly, to a loudspeaker having an upper diaphragm and a lower diaphragm which provide extended and substantially improved range of motion in response to movement of the voice coil without bending, buckling, twisting or other deformation which can create acoustic distortion.
		Loudspeakers generally comprise a frame, a motor structure, a diaphragm, an upper suspension or surround and a lower suspension or spider.
		It is therefore among the objectives of this invention to provide a loudspeaker which provides improved acoustic performance, particularly at low frequency and high excursions, which limits bending and twisting of the diaphragm and which resists forces imposed by pressurization of the enclosure within which the loudspeaker is mounted.
	www.devileye.net /catalog/derivatives_3-phenylisoindole-1-carboxylic/loudspeaker_with_improved_diaphragm.html (3085 words)

	Loudspeaker - Art History Online Reference and Guide
		The term is used to refer to both the transducer itself, and a complete system consisting of one or several transducers in an enclosure.
		The major role of the enclosure is to prevent the negative phase sound waves from the rear of the speaker combining with the positive phase sound waves from the front of the speaker.
		Other types of enclosures attempt to improve the low frequency response or overall efficiency of the loudspeaker by using various combinations of reflex ports (these enclosures may be referred to as vented enclosures, the interior of such enclosures tends to be lined with fiberglass batting for absorption), transmission lines and horns.
	www.arthistoryclub.com /art_history/Speakers (2977 words)

	Loudspeaker - Article from FactBug.org - the fast Wikipedia mirror site
		Because of effects such as resonance and various inertial effects, a single loudspeaker is not usually used to cover a wide range of frequencies; instead, a number of specialized units are employed known as the drivers of a speaker.
		An 'open baffle' loudspeaker is an approximation to this - the transducer is mounted on a simple board of size comparable to the lowest wavelength to be reproduced.
		Unfortunately, the recent marketing of plasma displays as high-end television sets and computer monitors has caused the me-too labeling of many speakers as "plasma" which have nothing whatsoever to do with plasmahttp://www.proaudiosuperstore.com/electrovoice-plasma-speakers.html, much as the advent of digital audio cause the marketing of a large number of "digital" headphones and speakers.
	www.factbug.org /cgi-bin/a.cgi?a=45871 (3555 words)

	get here: plasma arc loudspeaker (Site not responding. Last check: )
		Plasma arc welding (PAW) is an arc welding process similar to gas tungsten arc welding (GTAW).
		An electric arc is an electrical breakdown of a gas which produces an ongoing plasma discharge, similar to the instant spark, resulting from a current flowing through normally nonconductive media such...
		The plasma welding process was introduced to the welding industry in 1964 as a method of bringing better control to the arc welding process in...
	www.su-wug.de /plasma_arc_loudspeaker.html (295 words)

	Speakers (Site not responding. Last check: )
		Other types of enclosures attempt to improve the low frequency response or overall efficiency of the loudspeaker by using various combinations of reflex ports to transmit the energy from the rear of the speaker to the listener; these enclosures may also be referred to as vented/ported enclosures, bass reflex, transmission lines or horns.
		The efficiency is measured as dB/(WÂ·m)â”decibels output for an input of one nominal watt measured at one metre from the loudspeaker usually on the axis of the speaker.
		The most exotic speaker design is undoubtedly the plasma arc loudspeaker, using electrical plasma as a driver [3], once commercially sold as the Ionovac[4].
	abcworld.net /Speakers.html (4783 words)

	Speakers (Site not responding. Last check: )
		The most exotic speaker design is undoubtedly the plasma arc loudspeaker, using electrical plasma as a driver [1], once commercially sold as the Ionovac [2].
		Unfortunately, the recent marketing of plasma displays as high-end television sets and computer monitors has caused the me-too labeling of many speakers as "plasma" which have nothing whatsoever to do with plasma [3], much as the advent of digital audio caused the marketing of a large number of "digital" headphones and speakers.
		Electrostatic Loudspeakers (ESL) Tesla,Nicolas is believed by many to have put electrically charged carbon dust in a cup type devise for the creation of the first telephone loudspeaker.
	www.friendlyhippo.com /speakers/page7.html (339 words)

	Spartanburg SC \| GoUpstate.com \| Spartanburg Herald-Journal (Site not responding. Last check: )
		The most common type of driver uses a lightweight semi-rigid diaphragm (the cone), a coil of fine wire (the voice coil), a magnet structure with a circular gap, and a rigid support structure (typically called a basket, or frame).
		Most loudspeakers use two wiring points to connect to the source of the signal (for example, to the audio amplifier or receiver).
		Plasma arc loudspeakers use electrical plasma as a driver.
	www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=loudspeaker (7826 words)

	Reference.com/Encyclopedia/Loudspeaker
		In loudspeaker specifications, one often sees a speaker classified as an "N-way" speaker where N indicates the number of separate frequency bands into which the system divides the sound (not the number of drivers, as one frequency band may be handled by more than one speaker driver).
		In addition, because of the small size of loudspeaker drivers as compared to the length of sound waves at low frequencies (a few inches as compared to several feet), another important function of a loudspeaker enclosure is to provide an impedance match between the driver and the air.
		The sound pressure is measured at (or scaled to be equivalent to a measurement taken at) one metre from the loudspeaker and on-axis or directly in front of it under the condition that the loudspeaker is radiating into an infinitely large space and mounted on an infinite baffle.
	www.reference.com /browse/wiki/Loudspeaker (8256 words)

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