Has there ever been a dome tweeter constructed of paper?

[River757]

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"?

[454Casull]

How do you form paper into a dome?

[godfrey]

Make it that shape. Don't start with flat paper.

[454Casull]

Originally Posted by godfrey

Make it that shape. Don't start with flat paper.

Oh. Well one of us must be a paper product engineer.

[sangram]

Dome-shaped dustcaps made of paper are pretty common even today...

[planet10]

Originally Posted by River757

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)

dave

[wolf_teeth]

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:



It's a 6.5" diameter dome.
Later,
Wolf

[keyser]

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.

[planet10]

Originally Posted by wolf_teeth

Cerwin Vega had some dome-woofer prototypes

Those look an aweful lot like the Foster dome woofers that come up surprisingly often.

dave

[godfrey]

Originally Posted by 454Casull

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.