Added: 4 years ago
From: HowStuffWorks
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  • THE BEST Tone ever 0:53

  • It's a 'decent' explanation if you know electronics or if you know how a speaker works already. Otherwise I have to agree with the layperson that it just shows you what a 9V battery does to a speaker. What's the point of that? Also, for anyone that cares, it is the same principal for a woofer, subwoofer, tweeter etc. There are also different types of speakers that work in different ways. Starting to get confusing? Perhaps another video will do a better job of explanation...

  • I have that speaker they first show the white one it's a sansui.

  • these videos are to show the basic idea. i wouldnt say they show on precise.so....

  • LoL, yea, this is kinda funny...

    Now I am a speaker building pro!

  • wow speakers are that simple? well the device itself is simple but the computers/ radios have to do tons of processing to get the music we know and love. imagine when a guitar, a singer, a pianist are all making noise at once. the speakers has to replicate all those natural frequencies. it doesn't seem like much but really its quite amazing. it is the ultimate instrument lol, humans just can't play it

  • Great! Now I know how to put a 9-volt battery on my woofer! I learned a lot!

  • Great! Now I know how to put a 9-volt battery on my woofer

  • "bass speaker"? anyone knowS its called a SUBWOOFER DUHHH

  • What crap !

  • Oh my god, I am so enlightened. Thank you for educating me. Now, if my friends wonder, I can tell them, if you use a battery on it, it will move, and they will be impressed.

  • thats one small magnet !

  • wow, I just learned nothing!

  • joj seronje jednog

  • lol

  • please dont try to do what these douchebags did ! you'll just end up breaking your speaker.

  • you guys are freakin idiots

  • People do NEVER attach a DC supply (battery), because the voice coil will freeze in inner or outer position, and then wont be able to get the heat away, and then eventually toast it self.

    Use a AC current (from a MP3 play output, or amplifier), Because AC is in constant change between postive an negative, so the speaker cone will move back an forth. Therefor most of the elctricity going through the speaker, will transform into kinetic energy instead of thermal. And will remain much colder.

  • @Qube1 You can actually use this to determine positives and negatives on unmarked crossovers/speaker terminals. But you can only do it breifly. While speaker coils do depend on movement to cool them down, such breif 9 volt pulses to it shouldn't hurt it - And 9 volts isn't much at all, so it is not much power going to the coil. Although you are right, doing it breifly and only once or twice will do no damage (unless you are using like a 1" earbud speaker :P)

  • Worst explenation ever!

  • what makes a speaker better quality than others?

  • Better Materials, and non made china speakers like B&W

  • @pooty900 ?

  • how does a dual voice coil work?

  • Thank You a big help :)

  • I agree, didn't explain how the music or sound comes through the speaker, etc.

  • electrisity in the fourm of sound waves

  • That didn't explain much. Just how it vibrates

  • this is shit

  • DC of any voltage can damage a speaker driver (especially tweeters) best not to do it for too long

  • isnt that a sub? i wanted to know how complicated music feeds through speakers lol

  • Yah, thats a speaker :)

  • Best to use a 1.5V battery for this, a 9V battery will drive most speakers to their excursion limits and possibly damage them.

  • this didn't helped me...and this speaker is fake lol...very small magnet

  • it's not fake speaker...it's cheap speaker

  • yeah i know but it's about 10-12 inches but the magnet is way smaller than the normal....

  • its a good speaker magnet size means nothing

  • popcorns ready...

  • is that a pioneer woofer

  • yea thanks alot, now i know how to destroy my speaker!

  • who invented the speaker???

  • bell i think

  • 'tom harris' appears to be incredibly nervous

    notice how he looks away at the start and his hands are shaking like crazy on the closeup

  • Wanna know how a speaker works?

    You plug it into a 120v socket and you get a wonderful sounding 60hz Test Tone!

    Works for every and any type of speaker

    From Sony and JVC's on up to the most expensive Gryphon and Goldmund drivers.

  • Yes, but if you actually want the speaker to have a long life than it's very dangerous because it also gives the speaker 1,800 watts, and depending on the speaker, that could kill a small speaker in a fraction of a second, and it'll take several seconds or a few minutes to destroy a normal car subwoofer. That's the fastest way to kill a speaker other than physically smashing it.

  • is this how speaker works? non sense.

    you are showing how speaker responds when a 9V battery is connected.

  • wuauuuu credo che tu abbia scoperto l'acqua calda -_-"

  • mine cought a fire. good advise.

  • lol

  • i think they work like this:

    There is a powerful permanent magnet in the back of the speaker and an electromagnet coiled around the front, when electricity is flowing through the electro magnet it creates a magnetic field so it is then attracted to the powerful magnet in the back and it moves the speaker's "cone". this would create a sound wave, if you did this fast enough you could create a song, i think tones move the cone a lot or a little to create a high pitch or a low pitch.

  • LOL, I do that all the time with smaller batteries!

  • OMFG

    :D

  • i don't understand how it produces different sounds (tones)... I guess I'll have to research it.

  • Simple:

    Insert an electric frequency to the speaker coil, and you get the equivalent sound frequency.

    (Frequency in this case is a vibration)

    Different frequencies gets different tones

    Low frequency gives a low pitch tone.

    High frequency gives a high pitch tone.

  • FYI you can also use any 1.5V battery...

  • cool, show us that u can connect a 9v batt to a sub, that shows us how it works...

  • where you got that woofer?it looks really cool :P

  • lol

  • y lol thats a proper woofer unlike the most new plastic shits nowadays

  • LOL that's so basic!!!

  • It doesn't really explain how a speaker works, but it does demonstrate what excursion is (though they never said excursion). This is a good video but far too simple and it needs to be more technical! Although the experiment is a good way to test if a speaker is blown and you don't want to risk an amplifier : ).

  • I know that, when I had 7years old I did that :] until now.

  • ok folks,duh i have used this tec tip for years to find the polairty of factory speakers. + on battery to + on sub, will bounce outward this is correct. switch battery will bounce inward like theese dumb asses did. floks a great way to find + - on unmarked speakers...

  • i got a question sir if your speakers got wet and you were to try this is there a chance of you getting the shock of your life even though theyve been dried for a good 3 days?

  • 9 volt battery will not zap you, but if your speakers got wet inside then maybe permanently stuffed if paper cone and/or spider used in construction.

  • Agreed. How stuff works a lot of the time does not actually explain how it actually works on an internal level.

  • magnet is too small

  • What a load of crap - they did not tell how speakers worked :-X

  • that wasent very informative but i think the bloke who invented speakers is a very cleaver person how would u know how to make a serton kind of power to make a bit of copper wire and a magnet make a sound like a human voice

    its quite amazing if u think about it

  • poo

  • r0fl r0fl r0fl

  • Gess what? I eat my speaker. It tasted very nice indeed.

  • wow shame the videos arnt as good as the info on the website

  • Sound are actually vibrations in the air. If there are more vibrations per millisecond in the air it produces a high frequency, If there are just a few vibrations youll hear a low frequency. A speaker has a Electo magnet, and a normal magnet. If you activate the electro magnet (by sending electricity trough it) the speaker generates vibrations.

  • rofl......mmk these vids are extremly basic info

  • That video was weak. What happened to telling us how the electromagnet works?

  • ...

  • Marshall id like to hook that speaker to my car stereo thats hooked up in my room

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