Wich material is best for Woofers ?

lduarte1973 · 2nd April 2009, 05:21 PM

Wich material is best for Woofers : paper , carbon fiber , nomex , hexacone (Dayton) , kevlar , polypropilene , or any other ?

Lindell · 2nd April 2009, 06:03 PM

That would be a mix of all !

Mr Evil · 2nd April 2009, 06:52 PM

More compromises. I like metal cones, for increased efficiency and reduced distortion.

Cal Weldon · 2nd April 2009, 06:55 PM

There is no best material or all woofers would be made from it.

dukeoyork · 2nd April 2009, 07:48 PM

dreamonium is best.

Cal Weldon · 2nd April 2009, 07:51 PM

Is that the new name for unobtanium?

EDIT: I just looked it up. I had no idea dreamonium was real. Careful you don't scratch it.

dukeoyork · 2nd April 2009, 08:13 PM

Quote:

Originally posted by Cal Weldon
Is that the new name for unobtanium?

EDIT: I just looked it up. I had no idea dreamonium was real. Careful you don't scratch it.

that's hilarious. i though i made it up!
okay, how about ideallium, then? unobtanium is pretty awesome stuff, obviously. i'm also a fan of indestructium.

Cal Weldon · 2nd April 2009, 08:16 PM

I hope before we get too sidetracked that Luis realizes there is no best material but perhaps he can tell us what he is doing and we can assist with a product choice.

BlueWizard · 2nd April 2009, 08:44 PM

Again, each has pluses and minuses that you have to try and control in your design. All materials have some advantage in some situations.

Aluminum, more or less, tend to work well in their working range, but have nasty break-ups outside the working range.

Paper cones, if well designed, can have less of a break up on the high end.

Kevlar are more durable, and a fair compromise, though can be prone to high end break ups too.

I think what you need to do is evaluate specific speakers. It is best to only look at speakers for which you can get a sample frequency response and impedance chart. Though it may not perfectly represent the specific speaker you have, it is a good working guideline for understanding the speaker and how it will fit in your design.

More than anything, budget is likely to narrow down your working choice of speakers.

Just a few thoughts.

Steve/bluewizard

PeteMcK · 2nd April 2009, 10:16 PM

Lynn has a good intro to materials here:

http://www.nutshellhifi.com/library/...r-design2.html

2nd April 2009, 05:21 PM	#1
lduarte1973 diyAudio Member Join Date: Feb 2009 Location: Lisbon	Wich material is best for Woofers ? Wich material is best for Woofers : paper , carbon fiber , nomex , hexacone (Dayton) , kevlar , polypropilene , or any other ? __________________ Hey ! just because i´m going bald doesnt mean i cant like hair metal

2nd April 2009, 06:52 PM	#3
Mr Evil diyAudio Member Join Date: Aug 2004 Location: Behind you	More compromises. I like metal cones, for increased efficiency and reduced distortion. __________________ https://mrevil.asvachin.eu/

2nd April 2009, 06:55 PM	#4
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	There is no best material or all woofers would be made from it. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

2nd April 2009, 07:51 PM	#6
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	Is that the new name for unobtanium? EDIT: I just looked it up. I had no idea dreamonium was real. Careful you don't scratch it. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

2nd April 2009, 08:16 PM	#8
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	I hope before we get too sidetracked that Luis realizes there is no best material but perhaps he can tell us what he is doing and we can assist with a product choice. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting


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2nd April 2009, 06:03 PM	#2
Lindell diyAudio Member Join Date: Dec 2005 Location: Planet Earth	That would be a mix of all !

2nd April 2009, 07:48 PM	#5
dukeoyork diyAudio Member Join Date: Feb 2009	dreamonium is best.

2nd April 2009, 08:44 PM	#9
BlueWizard diyAudio Member Join Date: Jun 2007	Again, each has pluses and minuses that you have to try and control in your design. All materials have some advantage in some situations. Aluminum, more or less, tend to work well in their working range, but have nasty break-ups outside the working range. Paper cones, if well designed, can have less of a break up on the high end. Kevlar are more durable, and a fair compromise, though can be prone to high end break ups too. I think what you need to do is evaluate specific speakers. It is best to only look at speakers for which you can get a sample frequency response and impedance chart. Though it may not perfectly represent the specific speaker you have, it is a good working guideline for understanding the speaker and how it will fit in your design. More than anything, budget is likely to narrow down your working choice of speakers. Just a few thoughts. Steve/bluewizard

2nd April 2009, 10:16 PM	#10
PeteMcK diyAudio Member Join Date: Feb 2002 Location: Sydney	Lynn has a good intro to materials here: http://www.nutshellhifi.com/library/...r-design2.html __________________ ‘today… there lives alongside the twentieth century the tenth or thirteenth. A hundred million people use electricity and still believe in the magic power of signs and exorcisms” Trotsky

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