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How does a speaker work?
Basically the movement of the speaker is the cause of the stereo (mono speakers) making the noise via induction. The Induction is the result of controlled oscillation of electrical current.
A speaker is essentially an air pump. I like to say the bigger the pump the bigger the sound!!!
A driver is a device that reproduces sound. Drivers consist of woofers, subwoofers, tweeters, midranges, compression horns etc. A driver consists of a magnet assembly, a metal or composite basket/frame, coil and cone or dome.
A driver has a coil of wire that is electrically attached to your amplifier. The coil is the electro magnet not the magnet itself. The magnet is usually made of ceramic but used to be made of Alnico (Aluminum, Nickel, Cobalt; expensive compared to ceramic) and is more often now made of neodymium (a lighter stronger material than ceramic). The magnet has a permanent magnetic polarity that does not change. When the coil of wire is placed inside the magnet assembly "pole piece" and an alternating signal is placed thru the coil it will cause the coil to oscillate as the coil will now attract and repel within the magnet assembly as the polarity changes on the coil. The coil is attached to a cone (or dome in the case of tweeters and some midranges) which is capable of moving air more effectively.
Speakers consist of these drivers usually a woofer, a tweeter, and sometimes a midrange. A speaker will almost always also have a crossover network which is basically a filter network that effectively divides the signals to each driver so that the bass only goes to the woofers and the high freq only goes to the tweeters.
Typical speaker arrangements contain multiple speakers: two for a simple stereo system, or more for more recent systems. All multi-speaker systems need observing the polarity such that the coils in all speakers make the same, synchronized, movement: in a multi-speaker system, some sounds only come out of the left speaker, or the right speaker. That makes the stereo effect. The majority of the sound, however, is being emmitted through all speakers at the same time. The bass drum, for example, can typically be heard through the left and the right speaker at the same time.
Wiring all the speakers in such a system while observing their polarity allows the speakers to make a syncronized movement. For example, when the bass drum hits, all affected speaker coils would make a movememt towards you, then away from you, etc. If one of the speakers is wired with the reverse polarity, this speaker would start by moving away from you, then towards you. Air would simply be shifted back and forth between the speakers, instead of applying pressure on your ear drums.
To avoid that effect of lost sound energy, speakers should be wired up with the same polarity even though they are driven by an alternating current (AC) signal.
Another type of speaker is the electrostatic loudspeaker. Electrostatic loudspeakers are generally very much more expensive than the electromagnetic loudspeaker described above and, in most cases, far superior. Physically, they look completely different from conventional loudspeakers, usually taller and wider, but very much thinner (rather like a plasma television compared to a CRT television!).
Electrostatic loudspeakers work on the principle of attraction and repulsion between electric charges. The general principle is as follows. The diaphragm ('driver') , a large rectangular flexible sheet of material, such as mylar, is coated with a conducting layer and placed between two large metallic perforated sheets. A high DC voltage is placed between across this arrangement and the audio signal is impressed upon the voltage, causing the polarities to change in magnitude and direction in accordance with the musical signal. The result is that the flexible sheet will then move, acting in much the same way as the diaphragm described in the previous answer. Compared with electromagnetic loudspeakers, the diaphragm is much lighter and reacts far more rapidly to variations in signal. Furthermore, because the whole of the surface of the diaphragm is charged, the resulting forces are applied to the whole of the surface of the diaphragm rather than being 'pushed' or 'pulled' by a separate coil -as is the case with the magnetic loudspeaker.
Like electromagnetic loudspeakers, electrostatic loudspeakers also have 'woofers' and 'tweeters' -different-sized rectangular diaphragms.
Because electrostatic loudspeakers require a very high voltage (thousands of volts) to operate, they each have a heavy built-in transformer and rectification system and must, therefore, be connected to an electricity supply.
Electrostatic loudspeakers were developed, commercially, by a British hi-fi company called Quad, which has been manufacturing them since the 1950s.
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Center channel speakers are used for surround sound audiovisual systems in order to provide the effect that the sound is coming right from the screen. This is done by placing… the center channel speaker in the center of and behind the projection screen.
I assume you're referring to the subwoofer mounted right above the center brake light, right? I've had this exact same problem -- I thought I could get a replacement speaker w…ithout any problem. Not true -- there's something about the JBL audio system that makes it impossible to find a replacement speaker (except for going to Toyota Parts and buying one for $260!). The best way to fix this is to remove the subwoofer (a fairly easy job) and send it to the people at simplyspeakers.com. They will repair the speaker for about $50 -- and they do it very quickly. (Repair involves reconing and refoaming the speaker -- nothing I'd recommend for someone to do themselves). This solved my problem. While I appreciate that the word "easy" is a subjective term for the author above, for me there was nothing easy about getting this speaker out of the car so let me offer some advise. I'm sure this will make it easier for you. The "cover plate" needs to be removed from within the car. Since you don't want to snap anything or leave scrape marks behind, I removed it using a plastic spatula. Turn the spatula upside down. Wiggle it underneath either of the front corners, gently lift and it will pop up Do the same for the next corner. Note that the back of this cover plate is also the "eye level" brake light. Be careful - There is a brake light cable attached to the back which I found difficult to remove so I chose not to. I just moved the whole cover to one side. There are four gold bolts you will need to remove with a ratchet. Do so - don't lose them. You'll need a real ratchet not the "magic" ratchet that will slip over any bolt to remove. There's just no room to use it. As I noticed the design of how the car was assembled, it appears the speaker was installed first, then the nice covering to the back "window sill" and then they installed the back windshield. This makes it impossible to remove the speaker without a little "etching" on your part. Pull out a razor knife with a VERY sharp blade. DON'T TRY THIS IS IT'S NOT SHARP. I noticed that the speaker cover left an indent into the window sill that I used for a guide for my knife cut. You will be cutting into a thin piece of plywood but its going to take strength, patience and coordination to stay within the indentation. Place your knife with blade side towards you down against the upper LEFT hand side of the cutout. Now bring the knife towards you cutting away everything just to the RIGHT of the indented line. Bring that knife towards you until you make it to the lower left hand corner close to you. I didn't use a up-and-down hacking motion - I just inserted t the blade and pulled it towards me. This goes without saying but BE VERY CAREFUL as you are directing a sharp razor to cut in the direction of your chest. Once you cut this strip away AND the bolts are removed you will find this easy to remove. From the back seat, you can open up the compartment entering the trunk, slip your hand in and up. Push the speaker up at an angle towards the cut you just made and out it starts to go. HOWEVER - In the LOWER RIGHT, you'll notice the white speaker wire connector that need to be uncoupled. I used a pair of pliers On YOUR side of the coupling, there is a (for lack of a better term) an "arm" attached to the coupling that needs to be depressed to release it. Squeeze, pull back and out it goes. Pull out the speaker. I hope this helps in your "surgery"!!! Trowerr
From what i have been learnt, the magnet is connected to the diaphragm (the material which covers it) of the speaker and as electric current is passed in this causes the… magnet to 'Push' and 'Pull' on the diaphragm making this move resulting in sound waves being produced, these sound waves then enter your ear making you hear the noise. So the magnet helps produce the sound you hear from a speaker. LSE.
The wireless spealer system work in part (1)Transmitter and (2)Receiver.The receiver can be a DVD player, CD player or any audio device. It is the transmitter, which is attach…ed to the receiver, which picks up the FM radio signal from the receiver and sends it to the speakers. Wireless speakers contain an amplifier that turns the signal into audible sound.
Answer A speaker consists of one or more magnets, called voice coils, which are mounted at the narrowest part of a cone(s). The cone may be made of paper, cardboard, or… Kevlar. When the amplifier receives a signal, it amplifies it, creating current. The current causes the magnet to move, which distorts the cone. When the magnet relaxes, the cone returns to its original shape, after a few oscillations. The cone moving back and forth compresses the air in front of it, causing a wave to travel away from the cone. That wave is the same frequency as the signal the amplifier received.
Sonos speakers have very good rating and reviews, and seem to be a reliable well working speaker system. It is among the top selling speakers, with very good reviews.
Answer A microphone converts sound into electrical impulses. A speaker converts electrical impulses into sound. Answer Because they both work on the same pr…inciple, a changing electrical field (the audio signal) in a coil causes a magnet within the coil to vibrate in tandem. The magnet is attached usually to a paper cone which allow our ears to hear the sound. The converse is also true. For example if you talk into a headphone it causes the magnet to vibrate which produces an electrical signal in the coil which is connected to the headphone cable. Ram did this : ok micro phones convert mechanical energy which is te air from your mouth to mechanical ugh ohhhhhhh cccrapp 8=D---
All Speakers work the same way they have a magnet a speaker cone and a coil of wire. When AC electricity is put threw the wire an electromagnetic field is generated arou…nd it and as this field changes positive to negative the wire is forced back and forth in turn moving the speaker cone in and out creating air compressions that we call sound.
The "PA," in the term PA speakers, is an abbreviation, which stands for "public address." PA speakers are used to amplify sound for concerts, public speaking engagements and a…ny other type of gathering for which truly acoustic sound would be inadequate.
Yes the Bose 301 Speakers will work with almost all speakers out there, and they are also compatible with televisions, and can be used as a surround sound home entertainment s…ystem too.
A speaker has a minimum rated (reactive) impedance, which varies depending on frequency. This impedance is measured in ohms. Speakers typically are rated 4 or 8 ohms, as well …as having a watts rating. As an example, an 8 ohm 32 watt speaker would require an input of 16 volts RMS to develop full power. Again, that impedance varies, and 8 ohms is the minimum over the rated frequency range. Amplifiers have rating too. This is usually expressed as a certain power into a certain impedance. Again, that works out to a certain voltage and current as well. In order to maximize the power capability of the amplifier, the speakers must match the required impedance. If the speaker does not match, then the amplifier may reach either its maximum voltage range or its maximum current range prior to delivering full power so, it is really necessary to match the stated impedance of the amplifier to the speaker, otherwise you won't develop full power, and you might damage the amplifier. If you have an 8 ohm amplifer, and 4 ohm speakers, you can put two speakers in series. Conversely, if you have a 4 ohm amplifier, and 8 ohm speakers, you can put two speakers in parallel. The two speakers would split the power, so they can be less expensive. As an example, one older configuration, known as the "sweet sixteen", consists of 16 eight ohm midrange speakers wired in four sets of four. Each set is wired in series, and the sets are wired in parallel. The resulting impedance is 8 ohms and, since there is a large surface area, the output is very effective in the midrange. Couple that with two 15 inch woofers, and you have a very nice speaker system capable of handling considerable power.
A speaker converts electrical energy into sound.
Speakers work by turning eletrical energy into sound. Speakers are an electromagnet that connects to a paper cone which moves the cone which moves the air. This is how speaker…s work.
hook the speaker wires up to them and turn the volume up.
i think they live in the whirte house to help with every thing.
They will either pull in or push out depending on the polarity of the DC voltage and remain stationary. This is a bad idea as the DC resistance of the voice coil is mu…ch less than the AC impedance of the voice coil and it is possible to overheat and burn out the voice coil due to the much higher current the DC voltage can produce in the voice coil compared to the AC voltage that would drive the voice coil in normal operation.