Why do speaker drivers use different materials? 

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

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

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

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.

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

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 :/

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).

Theyre a fine speaker yes, i also love wharfedale

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.

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

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.

@@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,????????????

@@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.

Magico uses it, even in their least expensive speakers.

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

@My Name, like the Tin Man

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.

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

Jess Hull yes

looks to me like compressed bird poop or pvc hospital floor

@@jim9930 Oh yes the old kef were fantastic

What about bowers&wilkins? They're great.

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

That's why l painted my b and w cones

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

@@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

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.

@@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

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...

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

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.

@@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.

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.

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

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

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

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.

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

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

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

And the oil squirts out

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

carbon nanotube

And he did mention graphene.

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?

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

@@ronaldwanders 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.