A cheap ribbon you guys may be interested in

georgehifi · 8th July 2005, 09:10 AM

The Australian electronics company Jaycar has these and it's in Australia dollars, said to be made in Japan by Foster very well regarded. go for it (hope you can read it this 102k limit is a pain)

Cheers george

Jonathan Bright · 8th July 2005, 10:05 AM

Good move. Thanks. I saw them too and it got me thinking. Is it a conventional ribbon or is it one of those funny "Isodymanic" membranes where the magnet is enbedded in the membrane I think? I recall that "FOSTER" marketed a couple in Aust' in the mid 1970's and they were not a metal ribbon in a magnetic field. I don't want to be pedantic and the earlier ones had a good reputation. The other people who used this principle were Warfedale and Peerless who both used then in headphones;got some of the latter myself.
Cross overs a tad high at 6,400 Hz. I'd like a good drive that goes from around 700c/s up to 7 or 8 k. Any ideas in Aust' George?

georgehifi · 9th July 2005, 12:06 AM

Here are some better pics.

Cheers George

georgehifi · 9th July 2005, 12:08 AM

And another one.

Cheers George

Jonathan Bright · 9th July 2005, 12:29 AM

Thanks george. Looks like the real deal. The others were Fostex not Foster and they were marketed as "regular phase tweeters " I think. I've got the data some where.

Mikett · 9th July 2005, 12:42 AM

Hmmmm. Wasn't Legacy Audio bought out by a very old (60) organ company????

I wonder?

tomtt · 9th July 2005, 01:27 AM

http://fosterculver.com

dhenryp · 9th July 2005, 08:06 PM

I think it might not be a "true" ribbon. The yellow color is a strong sign that there is a Kapton plastic membrane. True ribbons (almost?) always have aluminum ribbon elements. A true ribbon that small would also need a matching transformer. I don't see anything that seems to have space for a transformer. My bet is that it's a magnetic planar with a Kapton membrane and multiple aluminum foil conductors attached.

bear · 11th July 2005, 02:56 AM

Certainly a "leaf ribbon" tweeter.

Foil on plastic of some sort. The yellowish color indicates a Kapton like material.

Probably Chinese manufacture - although maybe not.

Look similar to a number of tweeters being made these days including some offerings from "Hi-Vi" (also out of China).

Much depends on price and suitability to a given application if they are to be considered a "bargain" or not.

All imho, of course.

_-_-bear

georgehifi · 11th July 2005, 05:45 AM

Bear, did you look at the add in the first post, they're made in Japan and price is $39aus that about $29US.
When I had Infinity Emmit ribbons the foil/diaphram assembly looks very much like the Infinity ones.

Cheers George

8th July 2005, 10:05 AM	#2
Jonathan Bright diyAudio Member Join Date: Feb 2004 Location: Queensland	Good move. Thanks. I saw them too and it got me thinking. Is it a conventional ribbon or is it one of those funny "Isodymanic" membranes where the magnet is enbedded in the membrane I think? I recall that "FOSTER" marketed a couple in Aust' in the mid 1970's and they were not a metal ribbon in a magnetic field. I don't want to be pedantic and the earlier ones had a good reputation. The other people who used this principle were Warfedale and Peerless who both used then in headphones;got some of the latter myself. Cross overs a tad high at 6,400 Hz. I'd like a good drive that goes from around 700c/s up to 7 or 8 k. Any ideas in Aust' George? __________________ "It was the Spring time of the year when aunt calls to aunt like mastodons across the frozen waste." P.G. Wodehouse.

9th July 2005, 12:29 AM	#5
Jonathan Bright diyAudio Member Join Date: Feb 2004 Location: Queensland	Thanks george. Looks like the real deal. The others were Fostex not Foster and they were marketed as "regular phase tweeters " I think. I've got the data some where. __________________ "It was the Spring time of the year when aunt calls to aunt like mastodons across the frozen waste." P.G. Wodehouse.

11th July 2005, 02:56 AM	#9
bear diyAudio Member Join Date: Apr 2002 Location: New York State USA	Certainly a "leaf ribbon" tweeter. Foil on plastic of some sort. The yellowish color indicates a Kapton like material. Probably Chinese manufacture - although maybe not. Look similar to a number of tweeters being made these days including some offerings from "Hi-Vi" (also out of China). Much depends on price and suitability to a given application if they are to be considered a "bargain" or not. All imho, of course. _-_-bear __________________ _-_-bear http://www.bearlabs.com ...ur feeback please - like/dislike my what I have written? PM/email tnx. --

11th July 2005, 05:45 AM	#10
georgehifi diyAudio Member Join Date: Sep 2003 Location: Manly Australia (Jewel of the Pacific)	Bear, did you look at the add in the first post, they're made in Japan and price is $39aus that about $29US. When I had Infinity Emmit ribbons the foil/diaphram assembly looks very much like the Infinity ones. Cheers George __________________ Avatar : Production Lightspeed Attenuator www.lightspeedattenuator.com

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9th July 2005, 12:42 AM	#6
Mikett diyAudio Member Join Date: Aug 2003 Location: Toronto	Hmmmm. Wasn't Legacy Audio bought out by a very old (60) organ company???? I wonder?

9th July 2005, 01:27 AM	#7
tomtt diyAudio Member Join Date: Aug 2002 Location: kansas city mo, and on occasion, around the world ... Blog Entries: 15	http://fosterculver.com

9th July 2005, 08:06 PM	#8
dhenryp diyAudio Member Join Date: Aug 2003 Location: Mass.	I think it might not be a "true" ribbon. The yellow color is a strong sign that there is a Kapton plastic membrane. True ribbons (almost?) always have aluminum ribbon elements. A true ribbon that small would also need a matching transformer. I don't see anything that seems to have space for a transformer. My bet is that it's a magnetic planar with a Kapton membrane and multiple aluminum foil conductors attached.

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