Why do speaker drivers use different materials?

[@WS-gw5ms]

I love how he acknowledges other companies making good products. This definitely isn't the first time.

[@randomtube8226]

The perfect combination of speed, accuracy, and transparency should be what every loudspeaker should strive for.

[@harriglnola7655]

This is the BEST and LEAST COMPLICATED answer that I have ever heard to this question! Thanks so much.

[@oliverbeard7912]

There are so many different approaches .All with their advantages and disadvantages.Different designers will often be dictated by the available budget,and this places constraints on what can be achieved.All the driver materials will offer differing characteristics inherent to their structure to begin with.Then there's differing cone profiles,differing thickness,variants on the suspension,and or edge termination.Even the type of dust cap or phase plug will contribute in some way.A whole gamut of variables for the designer to play with!

[@Synthematix]

Thank you for answering my question Paul, you are fantastic, i have a pair of baby monitor audio speakers in the bedroom, they have a metal/plastic cone combination (monitor audio br1 bronze) while their mids are totally excellent the bass is not, also their tweeters are actually real gold and sound so beautiful.

[@nicovandyk3856]

Awesome explanation! Finally understand why you self-amplify the woofer and use accelerometers!

[@amirkhalid5449]

Long story short, everybody's got their own secret sauce and their own secret recipe.

[@jonathansturm4163]

Variety is the spice of life as Henry J Heinz pointed out :-)

[@BobGeogeo]

The little Axiom M3Ti's I stumbled on 15 ish years ago have the aluminum woofer and titanium tweeters Paul mentioned. They still sound pretty good to me.

[@BruceCross]

Velodyne also uses an accelerometer.

[@user-od9iz9cv1w]

I have learned more from your videos on these basics than from any other source. Unlike many engineers you do a delightful job of communicating to the non engineering community without chastising us for our lack of engineering knowledge.

[@audiorick841]

Great explanation. Thank you Paul!

[@starker1971]

Does your servo control system also address non signal times to decelerate the woofer in order to help the spectral decay ?

[@Cleofizoid]

Yessir, your KZbin Channel is fantastic. Daily viewer here...thank you for all the great information.

[@chris12321222]

If you touch it while playing will it blow with the accelerometer?

[@MrXispas]

I will post here. Why not triangular speakers for strength and lightweight? This must be the most stupid question ever....Love your videos Paul! Thx

[@thegolfnut812]

For playing music there are woofers and mid and high range speakers. Most guitar amps have one or more speakers of the same type and size. Is the frequency range for a guitar broad enough to have different speakers for the low to high range played on a guitar? Thanks in advance.

[@jordanlewis3790]

f/m=a you can always beat mass with more force to get more acceleration. you cant make up for rigidity after the fact

[@nicholascremato]

This is a GREAT youtube channel!!!

[@arkman8109]

Paul, I like the oil can explanation but only us old guys remember playing with oil cans.

[@stevefick3919]

HEY! I have one of those oil cans! I'm not old, am I? 59?? LOL!

[@blackbearaudiophile9595]

Love the channel! Thanks! Always informative!

[@wbwatts43]

Excellent answer.

[@jackallen6261]

Graphene is getting more common all the time! It shouldn't be that long before its feasible!

[@brianmoore581]

Magico uses it, even in their least expensive speakers.

[@ilya1kravchenko468]

Is there a reason why carbon fiber isn't used (at least to my knowledge)? Is it too stiff and therefore too brittle for lower frequencies since it doesn't bend but snaps under immense pressure?

[@davidholland7186]

can that speaker reproduce a spinning Wurlitzer ?

[@paulclarke245]

i would love to work for this guy!

[@googoo-gjoob]

thats funny...OIL CAN...most today are unaware oil came in cans.

[@peterdeneen1177]

That's the sound (poink, poink) that Paul was trying to imitate!

[@googoo-gjoob]

@My Name, like the Tin Man

[@user-od9iz9cv1w]

It did not come in a can. It was put into an "oil can" which is/was a dispensing device to squirt it onto the part that needed the lubrication.

[@joedavenport3263]

Focal uses blown bits of glass on there higher priced models of there speaker cones.

[@gamerpaddy]

looks to me like compressed bird poop or pvc hospital floor

[@Synthematix]

Paul im not lying, if i had the cash id buy the best of everything you make, i love my audio but living here in England there's not really any high end stuff on your level to choose from, England used to be one of the top countries for speakers, but sadly not any more.

[@Synthematix]

@@jim9930 Oh yes the old kef were fantastic

[@gta11121]

What about bowers&wilkins? They're great.

[@madarcturian]

What materials do you like for a tweeter, midrange, midbass? I loved my 12" aluminum subwoofer. Plan to get another. Also have a aluminum 6.5" that sounds very impressive at lower listening levels. Thank you for these videos, I love your material talk especially :)

[@Synthematix]

I love soft dome tweeters, also full metal super tweeters are so good

[@cityjenkins7500]

Can you show us the Square wave? That seems almost not possible... would and Oscilloscope be able to show that?? Just trying to figure that one out in my head... That has to be a lot of power all at once to be able to create that... tks

[@sudd3660]

with battery you create a electrical square wave, the outcome mechanically from the woofer is probably not that. you really need a graphically software to show how close it came to representing the square.

[@chrisvinicombe9947]

It would never be perfect. You'd need zero inertia for that.

[@tee-jaythestereo-bargainph2120]

I'd love to maxx those speakers out net they sound great but way to hefty price point for me give me an old set of HPM or 4355 I'm good lol

[@JessHull]

nothing wrong with a 4355! one of my dream speakers...assuming you're referring to the JBL 4355

[@tee-jaythestereo-bargainph2120]

Jess Hull yes

[@chefchutardo5215]

my infinity interludes have c.m.m.d cones (aluminum covered by ceramic foam on both sides). those are the best sounding speakers i ever heard. i will never sell those ! too bad infinity is going downhill lately. they had such good stuff before.

[@MrIlovemypants]

Chef Chutardo I still rock the il60’s love them! Tried the alpha series and wasn’t a fan infinity definitely has lost their spark :/

[@chefchutardo5215]

i had il10's and il30's. needed more power. so i build two huge front towers. each tower has two 10" infinity kappa 10.1 that play the 50-250hz. two of the 6.5" drivers that were in the interludes to play the 250hz to 2khz. and one seas tweeter. those things sound awesome !! a dayton 18" sub takes care of the 50hz down (seperate box of course).

[@Synthematix]

Theyre a fine speaker yes, i also love wharfedale

[@Bernard-John]

hello paul informative and well explained ,but ,i dont know what those 5 boxes behind you are,but why not use a hifi rack,surely that is a better idea,for many reasons,thanks,

[@johnhpalmer6098]

Ben Smith, those are the PS Audio gear, Not sure what the black piece is, but the next piece down is the CD transport, the next one down may be the DAC, then preamp and amp or something along those lines, and they power the Arney Newdell designed speakers.

[@Bernard-John]

@@johnhpalmer6098 my point was why on the floor and on top of each other,whats going on,there at pauls place,just dont understand,

[@johnhpalmer6098]

That I don't know but your initial question didn't ask for that. My guess is they are simply using gear to test speakers but may get something to sit them on. People stack gear all the time, though not necessarily on the floor but many do.

[@Bernard-John]

@@johnhpalmer6098 thanks for your reply,but do you put your amp or cd player or streamer on top of each other,and also on the floor,????????????

[@johnhpalmer6098]

@@Bernard-John none of mine are on the floor, but on top of expedit shelving from Ikea the cassette deck is on top of the receiver, the CD player is next to the receiver be on the same shelving. My turntable is on an adjustable shelf to level and isolate. The R2R deck sits in the expedit shelving to the table's left. Speakers are up off the floor about 15 inches. Again, don't know why Paul and Co. Do this. Some have short platforms they sit the amps on, on the floor though, especially if separates.

[@bournelucid]

Doesn't the weight of the cone lower the resonant frequency... 2 hz titanium cone

[@FSXgta]

yes, FS can be lowered by adding weight, or using different/thicker material

[@mfungi]

That's why l painted my b and w cones

[@laurentzduba1298]

Practical "flying cars" might only be possible if we can master the so-called Higgs Field manipulation technology like those used in the recently declassified video footages of UFOs caught on a US Navy F-18 Hornet gun camera. And just imagine Higgs Field manipulation tech being applied to hi fi loudspeakers where we could reduce the loudspeaker cone's rest mass to the same as that of a hydrogen atom's rest mass while retaining the material's stiffness.

[@johnsweda2999]

Hello enjoy your shows, take it with a pinch of salt from me I don't offended it's all done in the most possible taste. Make this driver I've not seen one. For woofers. it would work really well probably for mid-range 8 to 6" you're right about the aluminium or beryllium or even be the best titanium would be better, it is important the speaker is paper is very important it is a great acoustic material best out there for drivers metal drivers as you say have a canning effect, and they do have a metallic sound so my idea is to combine the two paper around the voice coil for a couple of inches glued on to a metal cone to give it the stiffness at the edges of the driver, Should give you best of both worlds the judgement on how much paper and metal you use has to be worked out maybe you can get them to make one. Why don't you go with plasma tweet seems to be something that hasn't really taken off I don't understand why. The best driver is by cube audio you should try them You don't know much about race cars that understandable no we build them to be as light as possible. distribution of weight is important and downforce effect makes up for the lightness as much 5 tonnes

[@accidentalheadclunkers8517]

Are showers part of the tour? Maybe I'll pass on the visit. That would be quite the bait and switch.

[@johnsweda2999]

@@accidentalheadclunkers8517 yes I think so as long as he doesn't expect you to share, this auto correction typing is a nightmare. That brings a new meaning if you scratch your back i'll will scratch yours

[@ArnoldVroomans]

Plasma tweeters create ions that are poisonous. But when are youre designs coming out. You seem so knowledegable. You probably work with a high end company. I am sure Paul is willing to maken you annoffer you cannot refuse.

[@johnsweda2999]

@@ArnoldVroomans is there?? I'm not sure in the quantity of gas by-product of ozone is what you're talking about, that it's really a danger it's only very mildly poisonous and not serious. In a built-up closed area maybe with long exposure if you're producing a lot of plasma in like cutting torches possibly. I mean there is a thing of being ozone poisoned what is temporary and has no long lasting side effects used in photocopying what is a lot greater than tweeter would produce. i have an Ozone air purifier and I've had it all my life I never had an issue I don't believe a plasma tweeter produces anymore than a air purifier. And anyway when ozone convert back to oxygen virtually straight away when it's produced there's no more ozone in your house than that is naturally outside in the air. I looked it up and tweeters were banned in America for some reason not sure if this still applies considering photocopiers not banned in America. And if you wanted to convert it back to oxygen straight away you just have to pass it through chlorine mesh so they could make a container that is made of chlorine impregnated mesh surrounding the plasma tweeter and no ozone would be depleted just oxygen. Maybe not sure this would have to be topped the chlorine but wouldn't be an issue you could have the mesh change colour when the chlorine is depleted say when chlorine is present it is green and when it gets depleted turns to Red a little cover on top of the speaker with a sponge and just some drops of bleach wood replenish the mesh

[@peterc2373]

By the way motional feedback was invented by Philips in the early seventies

[@thunderpooch]

I'm shocked that a feedback system can react quickly enough to adjust the subwoofer. Seems like an impossible task. 20 to 100 times a second the woofer is moving back and forth and is often producing far more than just one frequency and is always in a state of transition with multiple frequencies coming and going making the interaction and the affects on the cone very complex. After it recieves this data then it has to instruct the amplifier to readjust?? It really seems like black magic if it can work properly in real time. The PMC approach looks more credible, lol. They put a guard around their studio monitor woofers and subwoofers which limits max excursion if and when it happens. It's so simple and stupid but probably fixes the major anamolies which are severely problematic quite well.

[@Synthematix]

@@thunderpooch This is why its best to have 2 bass drivers per speaker

[@V00ify]

I have titanium subs from the early 2000's by fujitsu ten/eclipse....wonder why titanium isnt used more for subs?

[@jonathansturm4163]

Expensive. If an aluminium cone is stiff enough, why add the extra expense of titanium? Titanium comes into its own for tweeters. Edit: Polypropylene plated with titanium rather than pure titanium, or titanium alloy. Maybe the punters wised up to this...

[@V00ify]

some of the prices on speakers just makes me wonder...yea titanium is expensive, but in comparison aluminum is cheap for an expensive speaker system...@@jonathansturm4163

[@brianmoore581]

I have worked with titanium dental prostheses which are quite bendy, but spring back into shape. I believe that is referred to as a "memory metal" because it springs back to the shape it was cast in. The flexibility, bendiness, of titanium is great in certain applications, but very undesirable in others. It seems to me that if the goal is stiffness, a perfect piston, then titanium is definitely not the way to go. Of course, I am no expert.

[@jonathansturm4163]

@@brianmoore581 My spectacles are of the nature you describe. I suspect that this is because of the particular alloy used. Aluminium, with which I am more familiar, comes as several different alloys, some stiff and some very malleable.

[@ped-away-g1396]

if you have seen a lot of driver specs, you'll notice titanium isn't any better than other materials as a speaker cone/dome.

[@mikka1986]

Graphene speaker cone hmmm....

[@arande3]

Some speakers use them I think, in the super high end market. Try searching carbon nanotube drivers.

[@4G12]

The ideal speaker cone has infinite strength and stiffness and has zero mass.

[@Synthematix]

This is what i cannot understand, some of the best high power subwoofers for PA / Live use have pressed paper drivers

[@FSXgta]

for tweeters and midranges maybe, but how would a subwoofer with very little mass sound? The resonant frequency of the driver would be so high, that it would be horribly inefficient to produce anything below resonant frequency

[@RickMahoney2013]

How dare you sit your papers and glasses on the AN 3's.

[@stevefick3919]

Those aren't the AN-3's, but Arnie's own speakers. But HOW DARE HE anyway! LOL!

[@angelfranco5809]

It would be interesting to make a aerogel cone for the driver, maybe strengthen it with some other material ‘

[@elisha770]

03:30 That's what she said last night..

[@InsideOfMyOwnMind]

For awhile there was a guy out west here who used a hemp cone. I know, right? He just couldn't get the time alignment right. No but seriously it was just a real POS.

[@jackallen6261]

Just curios, what's up with the guy in the outro that always crosses his arms?? lol

[@randomtube8226]

Just imagine a servo controlled diamond cone woofer 🤔😂

[@chrisvinicombe9947]

Give it a few years we're still at the early stages of growing diamond. This will happen though.

[@sportscarnut]

Sorry but accelerometers do not get rid of inertia. It helps linearization, but does not violate physics.

[@johnyang799]

Sorry, but you just wanted to sound smart. Inertia is essentially mass. And the position = the final sound wave. The velocity constantly changes in order to do that. So getting rid of inertia means counter to the resistance by mass. So f=ma v=at v=(f/m) *t. In order to counter the mass, you need more force. More force comes from magnetic field generated by coil and current from amplifier. The servo system sense the difference in velocity and feedback to the amplifier. That's how to "get rid of inertia". You happy now?

[@johnyang799]

@My Name Yeah yeah yeah. It's just a fucking word. What's the meaning of "get rid of " anyway??

[@johnyang799]

@@sonusbonum No. Inertia is not a term is physics. There is only mass or rotational inertia. The inertia we understand is mass. So no mass doesn't change. What you have thought would possibly be momentum or kinetic energy. But all these are different things.

[@aryostosantossantos1215]

SOM ai precisa de vinil sistemahi end som analogico alta definicao ajudar som sair qualidade limpa

[@brianmoore581]

"Stiff with the ability to move"...

[@accidentalheadclunkers8517]

And the oil squirts out

[@jonathansturm4163]

@@accidentalheadclunkers8517 So that's what it is...

[@aryostosantossantos1215]

SALA PRECISO TER DUAS CAIXAS DE SOM E TAMBEM TER MAIS QUALIDADE DE SOM SISTEMA AI AJUDAR QUALIDADE SOM FINAL UMA CADEIRA MAIS CONFORTAVEL SISTEMA AI FOR VALVULADO OS PRE SINAL FICAR MAIS FIEL SOM SAIDAS CAIXAS TORES

[@airgliderz]

Marketing bull is main reason.

[@testtesting1232]

Graphite is stiff with the ability to move

[@johnyang799]

carbon nanotube

[@johnyang799]

And he did mention graphene.