5614 Posted January 24, 2005 Share Posted January 24, 2005 apparently you can get some from inside speakers, but that last speaker i had there wasn't any inside, is it to do with quality, size, age or what? is there ferromagnets inside speakers? if so, which ones? Link to comment Share on other sites More sharing options...
Lance Posted January 24, 2005 Share Posted January 24, 2005 Are you talking about ferrofluid? Link to comment Share on other sites More sharing options...
ed84c Posted January 24, 2005 Share Posted January 24, 2005 what are ferromagnets? Just Iron magnets? Link to comment Share on other sites More sharing options...
5614 Posted January 24, 2005 Author Share Posted January 24, 2005 lance: yes im talking about ferrofluid ed84c: ferrofluid: a ferromagnetic (attracted to a magnet) liquid used in some speakers which helps remove heat from the voice coil, improves damping, and increases power handling. take a look at google images: http://images.google.co.uk/images?hl=en&lr=&safe=off&q=ferrofluid Link to comment Share on other sites More sharing options...
Lance Posted January 24, 2005 Share Posted January 24, 2005 I think they are used in a type of speaker called "tweeters" but I am not completely sure. Also I used to sell ferrofluid and I still have quite a but left if you're interested. Link to comment Share on other sites More sharing options...
5614 Posted January 24, 2005 Author Share Posted January 24, 2005 how would you recognise a "tweeter" speaker? (compared to a normal one?) i'll remember that offer. Link to comment Share on other sites More sharing options...
Lance Posted January 24, 2005 Share Posted January 24, 2005 how would you recognise a "tweeter" speaker? (compared to a normal one?) To be honest I have no idea. The only real experience I have with them is seeing them pop up on ebay with ferrofluid in the name. Also, I'm pretty sure that they are only used in high-end speakers and if you find some you would probably be better off selling them and buying the ferrofluid. Link to comment Share on other sites More sharing options...
5614 Posted January 24, 2005 Author Share Posted January 24, 2005 how much money for how much ferrofluid? (in UK pounds if you can) how is it transported/contained? like in a glass tube or what? Link to comment Share on other sites More sharing options...
jdurg Posted January 24, 2005 Share Posted January 24, 2005 A tweeter is a speaker which outputs higher frequency sound waves. They are responsible for high pitched instruments, voices, and general sounds you hear in movies and music (Basically the treble part of a sound setup). Woofers are designed to output the lower frequency sound waves. They are generally responsible for the bass sounds in music and audio. Subwoofers output the really low frequency sound waves and are responsible for the thumping and vibration you feel when listening to music/movies with deep bass. So even the cheap speakers have tweeters and woofers. It's just that the more expensive ones have better quality tweeters and woofers in them. Link to comment Share on other sites More sharing options...
5614 Posted January 24, 2005 Author Share Posted January 24, 2005 So even the cheap speakers have tweeters and woofers. so even cheap speakers would have ferrofluid in them? i mean, those really basic component speakers that you use to make a buzzing sound dont have, but should any general stereo have ferrofulid in? what im trying to get to is that i have some old stereo speakers which i can take apart, will they have ferrofluid inside them? Link to comment Share on other sites More sharing options...
Lance Posted January 24, 2005 Share Posted January 24, 2005 how much money for how much ferrofluid? (in UK pounds if you can) how is it transported/contained? like in a glass tube or what? 4 pounds for 30ml. Thats just a number of the top of my head so if you're serious we can work something out. I can probably find/buy a container somewhere depending on how much you would want. I have some small glass vials around. Link to comment Share on other sites More sharing options...
5614 Posted January 24, 2005 Author Share Posted January 24, 2005 ok, i'll see if i can get any ferrofluid outta old speakers, or should i say tweeters!? and if not i'll come for you and your ferrofluid supplies with some money! just outta interest, how did YOU obtain your ferrofluid? Link to comment Share on other sites More sharing options...
Lance Posted January 24, 2005 Share Posted January 24, 2005 just outta interest' date=' how did YOU obtain your ferrofluid?[/quote'] I bought it in bulk from ferrotec. Link to comment Share on other sites More sharing options...
ed84c Posted January 24, 2005 Share Posted January 24, 2005 well 5614, your the right side of the exchange rate to pay for it... I got a $20 changed to day for £9.87 Link to comment Share on other sites More sharing options...
Silencer Posted January 24, 2005 Share Posted January 24, 2005 ^I know, isn't it brutal? My sister wants to do a semester abroad in england, but the exchange rate might make it impossible (she is poor as it is). Link to comment Share on other sites More sharing options...
Silencer Posted January 24, 2005 Share Posted January 24, 2005 Just out of curiosity, what do you want to do with it? Or is it just one of those cool things to have? Maybe you can make it? Link to comment Share on other sites More sharing options...
5614 Posted January 24, 2005 Author Share Posted January 24, 2005 yup, its just one of those cool things to have... i mean come on, have you seen the videos? it'd be wicked to have some to play with! how can you make it? Link to comment Share on other sites More sharing options...
Lance Posted January 24, 2005 Share Posted January 24, 2005 how can you make it? You cant make real ferrofluid without chemicals and lab equipment. Try searching on http://forum.4hv.org/ I think "Andrew" successful did it. Other than that I have heard of no one else. There are ways to make crappy fluids. If you search google you will find many of these recipes. Generally mixing magnetite(from sand) with mineral oil or corn syrup. I have heard of people also taking the magnetic dust from VHS tapes and mixing it with a fluid. Rust is also slightly ferromagnetic so you could try that too. Unfortunately none of these will create the “spiking” that makes ferrofluid so cool. Link to comment Share on other sites More sharing options...
5614 Posted January 24, 2005 Author Share Posted January 24, 2005 you're a good advertiser, you're getting to me.... m.u.s.t...f.i.n.d...f.e.r.r.o.f.l.u.i.d! Link to comment Share on other sites More sharing options...
jdurg Posted January 24, 2005 Share Posted January 24, 2005 Take a look here. Emovendo is pretty good and I've never had problems with him. Link to comment Share on other sites More sharing options...
Lance Posted January 24, 2005 Share Posted January 24, 2005 Take a look here.[/url'] Emovendo is pretty good and I've never had problems with him. Yea, except he ripped off my kit. Ah well, thats capitalism I guess. Link to comment Share on other sites More sharing options...
5614 Posted January 25, 2005 Author Share Posted January 25, 2005 a) what is ferrofluid's chemical composition? b) can you touch it? (with your fingers?).... without harming yourself! Link to comment Share on other sites More sharing options...
Lance Posted January 25, 2005 Share Posted January 25, 2005 a) what is ferrofluid's chemical composition? Tons of info. The fluid is mineral oil based. b) can you touch it? (with your fingers?)[/i'].... without harming yourself! Yes, you can. Its a very weird feeling to put your finger in one of those spikes. However, I would not recommend it because it does stain your finger for some time. Link to comment Share on other sites More sharing options...
5614 Posted January 25, 2005 Author Share Posted January 25, 2005 Yes, you can. Its a very weird feeling to put your finger in one of those spikes. However, I would not recommend it because it does stain your finger for some time. is that one of things which you just have to do and then regret doing it once you've done it? just thinking, i read that ferrofluid will evaporate if you leave a spiky model on display, so how is it best stored? in a bottle? if i wanted to keep it on display, would i need to put in a sealed glass box or something? Link to comment Share on other sites More sharing options...
Lance Posted January 25, 2005 Share Posted January 25, 2005 just thinking, i read that ferrofluid will evaporate if you leave a spiky model on display, so how is it best stored? in a bottle? if i wanted to keep it on display, would i need to put in a sealed glass box or something? Yes, but its not somthing you would want to leave sitting out in the open anyway. It gets on everything. Link to comment Share on other sites More sharing options...
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