Has there ever been a dome tweeter constructed of paper? - diyAudio
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Old 4th December 2010, 02:39 AM   #1
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Default Has there ever been a dome tweeter constructed of paper?

Paper/cellulose is still used in many low & mid frequency drivers to this day, as far as I know because of its lightness, stiffness and (some) inherent damping abilities. And paper cone tweeters, the best ones anyway, can sound quite good I think, though obviously not the equal of a modern dome especially as far as dispersion is concerned.

But does anyone know why paper has never been used in a dome configuration? I have never seen one myself. Is it something to do with physics or a manufacturing problem, or could it be a marketing issue, in other words, paper would be perceived as "cheap"?
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Old 4th December 2010, 03:01 AM   #2
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How do you form paper into a dome?
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Old 4th December 2010, 03:19 AM   #3
godfrey is offline godfrey  South Africa
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Make it that shape. Don't start with flat paper.
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Old 4th December 2010, 05:16 AM   #4
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Originally Posted by godfrey View Post
Make it that shape. Don't start with flat paper.
Oh. Well one of us must be a paper product engineer.
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Old 4th December 2010, 05:17 AM   #5
sangram is online now sangram  India
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Dome-shaped dustcaps made of paper are pretty common even today...
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Old 4th December 2010, 05:51 AM   #6
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Quote:
Originally Posted by River757 View Post
Paper/cellulose is still used in many low & mid frequency drivers to this day, as far as I know because of its lightness, stiffness and (some) inherent damping abilities. And paper cone tweeters, the best ones anyway, can sound quite good I think, though obviously not the equal of a modern dome especially as far as dispersion is concerned.
I don't necessarily agree with you on the last comment (but then i'm not a big fan of the standard conves dome). The original EPI concave dome was made of paper. It is quite a nice tweeter (not well built thou). And there are more than a few that are essentually dome tweeters with big surrounds (the Large Advent) I have seen dome mids (Philips) and dome woofers (Foster)

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Old 4th December 2010, 06:44 AM   #7
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Yep- Philips AD0210 heritage was either a hard-felt or a paper blend.

Cerwin Vega had some dome-woofer prototypes built quite a while back, but never went into production. I believe they were a non-pressed-pulp material not unlike a lot of woofer cones:

Click the image to open in full size.

It's a 6.5" diameter dome.
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Old 4th December 2010, 07:19 AM   #8
keyser is offline keyser  Netherlands
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A couple years ago I had a pair of Acoustic Research AR3's. They had a small paper dome tweeter, which was renowned for its sweetness. The weird thing about it was its very low efficiency, which was around 82 dB/W.
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Old 4th December 2010, 08:11 AM   #9
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Originally Posted by wolf_teeth View Post
Cerwin Vega had some dome-woofer prototypes
Those look an aweful lot like the Foster dome woofers that come up surprisingly often.

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Old 4th December 2010, 09:42 AM   #10
godfrey is offline godfrey  South Africa
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Originally Posted by 454Casull View Post
How do you form paper into a dome?
According to Paper - Wikipedia: "In papermaking a dilute suspension of fibers in water is drained through a screen, so that a mat of randomly interwoven fibers is laid down."

I guess if you use a dome shaped screen (like a tea strainer), you get a dome shaped piece of paper.
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