Why Are There Magnets On Speakers?

Now that you mention it... that is kinda weird... hmmm...

The voice coil that the amplifier feeds produces a magnetic field that interacts with the magnet to move the speaker cone back and forth to generate sound.


BE BUDA BEEP!!

sci

User ID: 10216,

Would a speaker work without a magnet? Remember as a kid how you could take 2 tin cans and put a string or wire between them and talk to another person?

Also,

Does it matter the size of the magnet (No puns here!) or would any size magnet work for any size cone or????

They have magnets to free up your hands.Instead of carrying around a boom box,all you have to do is hold the speakers to your head and the magnets will attatch themselves to the thick plate in YOUR skull,thus giving you the ability to jerk off and jam to some tunes at the same time!

User ID: 83,

83 i was going tosay to stick to your fridge

did you know that there is technology now that will turn any household object, even a houseplant, into a speaker?
[link to www.ektopia.co.uk]



anyway, the explanation has already been given, but if you search around a bit, you´ll find other technologies that are being developed for sound.

dave

Tin cans on a string don´t amplify the sound; thats why they only work for a short distance.

Speakers produce sound by moving air; they move air by making the speaker cone move bac and forth. The faster the cone moves, the higher the sound freq. produced. The harder the cone is thrust back/forth, the louder the sound.

The cone is attached to a coil; the coil sits inside a permanent magnet. When the sound signal is fed into the coil, the energized coil reacts like an electric motor inside the coil and move back and forth at the frequency of the sound signal. The more current that´s fed to the coil, the louder the sound.

Magnet size is very important to producing hi fidility sound. Typically, the bigger the magnet, the more faithfully the sound is reproduced.

A washtub bass can be pretty loud too.

MAGNETS SUCK

here´s the direct link for any Japanese readers tot he ´Let´s´ company that´s doing this flower thingy:

[link to www.lets-direct.jp]

Demagnetism (Omni #1)
by

Amitakh Stanford

25th August 2003

The following information, as with all information that I have given out in the past, is not channelled material; I do not channel material.

The information contained in this Omni is important and serious.

One of the most critical traps in this world is caused by magnetism, which operates from minute scales onwards to universal scales. This trap has been hidden and is currently not even suspected by people. In fact, today some "healers" are actively promoting the use of magnets in clothing, bedding, jewellery etc., which is totally contrary to spiritual well-being, despite its APPARENT beneficial uses such as providing directional compasses, shielding from much harmful radiation, use in electric motors, a multitude of electronic uses and certain biological healing effects.

At the present time, beings of Light especially are being affected by magnetic fields that are being operated by the Dark Side. Beings of Light are being drained of massive amounts of energy, sometimes even totally depleted of their energy because they are being magnetised. On the contrary, beings of Darkness are full of energy due to "polarization".

A huge "monitor" is controlling the magnetics in this Evil Creation. In the True Divine Creation, there is no magnetic field and nothing is magnetised. Magnetism is a tool used by Evil in this sector to programme and manipulate all facets of all types of beings. This is done at the physical, emotional, mental and spiritual levels.

The Earth contains a vast magnetic field on and about it. DE-MAGNETISM is THE KEY to unlocking the "prison" doors that have kept so many imprisoned in Darkness and Ignorance for so long that they have forgotten their Divine heritage because of the magnetic-filtering mechanism placed on and about the Earth.

On the physical level, magnets can be temporarily formed by electrical current that flows through coils or inductors. They can also be permanent in nature, thereby needing no electrical current to effect a magnetic field. Permanent magnets are static - there is no flow in or through them - anything that falls within a permanent magnet´s field is trapped. Once something is trapped in a magnetic field, it is forced to maintain a pattern and is locked into a shape. A magnet leaves a residual magnetic effect on anything that it contaminates. It forms a specific pattern which resists any change, re-alignment or correction. This carries right through the physical to the spiritual level and is very evil.

Consider how large crowds of people can be instantly organized into specific patterns of thoughts or behaviours. This has been witnessed world wide, especially recently; discussion about it would be superfluous. This programmed behaviour is accomplished via magnetism. Remember how iron filings that are randomly distributed on a piece of paper can be instantly organised into the shapes of a magnet´s fields when a magnet is placed under the paper. Not only iron, nickel and cobalt can be magnetised - all matter is susceptible to adverse magnetic effects and programming - even biological matter can be magnetised by sufficiently powerful magnetic fields.

When alternating current is used to produce an electromagnet, there are rhythmic reversals of the flow of current that correspondingly reverse the polarity of the magnet. The Earth´s magnetic field is primarily the result of a gigantic electromagnet, (a temporary magnet). Therefore, the earth´s magnetic field requires electro-energy to keep it intact. Currently, the earth´s magnetic field is diminishing. One of the main reasons for the recent power outages in Eastern North America and in the Georgian Republic were the attempts by the Dark Side to replenish the Earth´s magnetic field. These were unsuccessful attempts, but, because Darkness is getting very desperate, It will try again. Therefore, further power outages are planned for various parts of the world.

Ironically, the Sun´s radiation actually diminishes the magnetic field of the Earth. As the Sun´s radiation increases, the Earth´s magnetic field diminishes. As the magnetic field diminishes, the programming by Darkness begins to break down more and more. The Sun Cruisers are causing the Sun to heat up hotter and hotter, which causes further breaking down of the magnetic field of the Earth and all the other planets in the Solar System.

When the Light began correcting this sector, there were still many beings of Light trapped on the Earth. Most of these who were in human bodies have already been evacuated over the last few years. Prior to the evacuation, Darkness would derive a large amount of energy by extracting it from the "civilian" beings of Light. Now in the final stages of the Correction Process, there are only a few "Front-Line Warriors of Light" who are being supplied with a lot of Divine Energy. These are primarily comprised of the Rescuers (the True Divine Mother [not the Earth Mother], the Attas and the True Divine Mother´s "Twelve Sisters" and parts and projections of these twelve). [This has been explained in my Discourses on the Nara Web Site]. Therefore, the Dark Side is really desperate for energy at this time.

The Divine Mother, the Attas, and the parts and projections of the "Twelve Sisters" are the main carriers and distributors of Divine Energy at this time. This energy that they are carrying and distributing has often been sabotaged and short-circuited by Darkness via magnetism. Darkness accomplishes this via Its "monitor" by deliberately directing magnetic fields at the Light carriers and totally sucks them of all energy. It can take a long time for one of the carriers to replenish after being sucked dry. While the magnetic field is zoomed at them, they cannot receive Divine Energy to replenish themselves. Once they are drained, the field is removed so they can replenish, only to be massively drained once they have been "re-fueled"by the Divine Side. This cycle has temporarily made it very difficult for the Light Workers because they have limited energy to operate here.

While all the Light beings were depleted, Darkness viciously attacked them with negative thoughts and negative emotions by sending them the "Whoak-ka" energy, which comes in very slowly and subtly like poisoned waves that have a tendency to swamp beings in negativity. The "Whoak-ka" energy begins so slowly that it is basically disregarded until it has swamped the being. Once caught in the "Whoak-ka" energy, beings can begin playing a kind of sick game with themselves by intentionally remaining in the negative and destructive mood caused by it. While all of the Attas were able to successfully escape the destructive nature of the "Whoak-ka" energy, the majority of people on Earth would not be able to avoid its "invasion". The Dark Side knows this and will soon release the "Whoak-ka" energy on the general population, which will cause many to go insane. This will be the scene of Terminal Madness.

The Evil "monitor" magnetises the bodies of the Light carriers which causes them to be totally drained of their energy and leaves them exhausted and totally spent. On the other hand the evil ones are full of energy due to the fact that they are "polarized". Darkness distributes the stolen energy to various Dark beings to feed their nefarious activities. Geographic distance is no barrier to this type of distribution of the stolen energy.

This latest massive drainage attack on the carriers of Divine Energy is but another desperate attempt by Darkness to keep Its failing system afloat. Darkness will not succeed. A solution to this problem has been discovered and implemented already. There is a DEMAGNETISATION process underway but is only available to a select few of the Light carriers for security reasons.

back to top Xee-A Twelve Home
Copyright © 2003 by Amitakh Stanford

[link to www.popsci.com]

Woody Norris has a way of getting inside your head ...

by David Sparrow

Woody Norris has a way of getting inside your head. No, we don´t mean his overpowering handshake or Barnumesque penchant for self-promotion ("This is the biggest thing in audio in 77 years"). We mean HyperSonic Sound, his latest creation. (A prolific inventor, Norris, 64, also won a Best of What´s New for a personal flying machine.)

Unlike traditional speakers, which scatter sound, Norris´ device streams it in a precise, laser-like beam for up to 150 yards with almost no degradation in quality or volume. If that seems incredible, trust me, it is.

When I met Norris in September he pointed the 7-inch-square emitter at me from 30 feet away. Suddenly I heard the sound of birds chirping. The noise didn´t seem to emanate from his device; I felt like it was generated inside my noggin. Yet a guy just 2 feet away from me couldn´t hear it.

How does it work? The piezoelectric transducer emits sound at frequencies above the human ear´s 20,000-cycle threshold. Unlike low-frequency waves, the high-frequency signals don´t spread out as they travel through air. Yet they do interact with the air to induce a related set of ultrasonic waves. These waves combine with the original waves, interfering to create an audible signal, focused into a beam.

The applications are numerous, if not apparent: Thousands of soda machines in Tokyo will soon bombard passersby with the enticing sound of a Coke being poured, and several U.S. supermarkets will promote products to shoppers as they walk down corresponding aisles. Eventually HyperSonic Sound might enable a nightclub to play disco on one side of the dance floor and salsa on the other. Ambulances equipped with hypersonic sirens could clear the streets without waking the neighbors. Norris´ company, American Technology, sells the devices for $600.

[link to www.popsci.com]

Audio´s Next Big Thing?
We´ve heard hypersonic sound. It could change everything.

By Suzanne Kantra Kirschner




Illustrations by Stephen Rountree


TARGETED SOUND
Unlike ordinary speakers, which disperse sound in all directions, American Technology´s speakers emit ultrasonic frequencies in a focused cone, like a flashlight. Only when you disrupt the sound beam or reflect it off a surface do you hear it. So audio can be pinpointed to reach an individual or widened to target a larger group.








It´s the most promising audio advance in years, and it´s coming this fall: Hypersonic speakers, from American Technology (headed by the irrepressible Woody Norris, whose radical personal flying machine appeared on our August cover), focus sound in a tight beam, much like a laser focuses light. The technology was first demonstrated to Popular Science five years ago ("Best of What´s New," Dec. ´97), but high levels of distortion and low volume kept it in R&D labs. When it rolls out in Coke machines and other products over the next few months, audio quality will rival that of compact discs.

The applications are many, from targeted advertising to virtual rear-channel speakers. The key is frequency: The ultrasonic speakers create sound at more than 20,000 cycles per second, a rate high enough to keep in a focused beam and beyond the range of human hearing. As the waves disperse, properties of the air cause them to break into three additional frequencies, one of which you can hear. This sonic frequency gets trapped within the other three, so it stays within the ultrasonic cone to create directional audio.

Step into the beam and you hear the sound as if it were being generated inside your head. Reflect it off a surface and it sounds like it originated there. At 30,000 cycles, the sound can travel 150 yards without any distortion or loss of volume. Here´s a look at a few of the first applications.

1. Virtual Home Theater
How about 3.1-speaker Dolby Digital sound? With hypersonic, you can eliminate the rear speakers in a 5.1 setup. Instead, you create virtual speakers on the back wall.

2. Targeted Advertising
"Get $1 off your next purchase of Wheaties," you might hear at the supermarket. Take a step to the right, and a different voice hawks Crunch Berries.

3. Sound Bullets
Jack the sound level up to 145 decibels, or 50 times the human threshold of pain, and an offshoot of hypersonic sound technology becomes a nonlethal weapon.

4. Moving Movie voices
For heightened realism, an array of directional speakers could follow actors as they walk across the silver screen, the sound shifting subtly as they turn their heads.

5. Pointed Messages
"You´re out too far," a lifeguard could yell into his hypersonic megaphone, disturbing none of the bathing beauties nearby.

6. Discreet Speakerphone
With its adjustable reach, a hypersonic speakerphone wouldn´t disturb your cube neighbors.

Hay Mrdjs7 - I guess they don´t teach science in schools where you come from...

And 10 seconds on google would have brought up thousands of pages explaining how speakers work.

then you ought to know that when insults are hurled it shows deep rooted insecurity......get over it and join the party

Why do people always have to post vaguely related articles in decent threads?

this is moronic, unless the OP is a kid and can then be commended for his want of learning, but there comes a point in your life where if you cant figure shit out for yourself you are fuckin trouble for the rest of us! get the fuck out of here with your braindead stupidity and lack of common sense.

Whatever happened to that mob who were using arc welders for a speaker system. Was supposed to be VERY loud, but had an awesome frequency responce. Quite expensive to run though

if you dont have anything good to say then stfu......the admins let it thru so who are you to say any post has merit or not

They build magnets into speakers to convert the acoustic waves travelling down the wires into magnetic waves which directly effect the pineal gland. This is how they use electronically reproduced music for mind control. The effect is strengthened by an order of magnitude in a television which converts the visual waves coming in from the cable into magnetic waves.

For the best sound use the biggest magnets and make sure that the enclosure is of thick wood that has air holes drilled in so that the fluctuation of the speaker can release air build up around the cone. Generally speaking the heavier the speaker the better the quality of sound. This is what I have learned through the years at least. For the ass wipes that have the nerve to do nothing but talk shit and whine because the op asked a question I say go screw yourselves. Let everyone see what kind of threads you start you bunch of whinny little wanna bees. This is good conversation and at least the op had the balls to bring it up.

speaker magnets are part of the NWO to get you to worship the beast....

(well...maybe not. Just trying to get this question and relatively rational discussion to fit in a GLP)

Converts electromagnetic current to mechanical force to move the cone and make acoustical waves.

Then there are Chick Magnets. Make sure the wood is thick.

SO combined with toshibas new battery systems,which use nanotech, one could combine technologys to emulate sound or magnetic waves for propulsion.

6614 got a link?

It is the easiest way to convert electrical waves into mechanical waves. A varying B field produced by the program will react in the constant B fields produced by the magnet.

Electromagnets are sometimes used, however they require an additional power source to generated the required B field.