Which Fostex is this?

oceancity · 2nd November 2008, 02:48 AM

I've been given a pair of 4 inch drivers. Fostex 10F02C is written on the magnet. I haven't found those numbers on the Fostex site although they do look like the discontinued FE103.... Anyone know this code?

BHTX · 2nd November 2008, 05:02 AM

Sorry, I know nothing about them. However, I found these photos on a Google cached page of a previous eBay auction..

oceancity · 2nd November 2008, 07:54 AM

Thanks for those photos BHTX, They' re just like the ones I've got. I mounted them in a 6 litre vented enclosure that was lying around from a previous experiment and the result is promising. The bottom end is quite pronounced and a bit woofy, They might work better in a sealed box. the mids are fine. The top end is nothing to write home about, and would benefit from a tweeter maybe?but they're OK. Now if someone knows exactly what they are I will be able to make the right box for them and then I think they are a proposition.

planet10 · 2nd November 2008, 03:05 PM

An early ceramic magnet FE103

dave

Cal Weldon · 2nd November 2008, 05:46 PM

Interesting how they reverted to the numbering system from the Foster days.

oceancity · 2nd November 2008, 08:56 PM

Thanks Dave. Is there a spawn family box that would work? If not it looks like a 3.6 L BR box might be the go.

planet10 · 2nd November 2008, 11:27 PM

Quote:

Originally posted by oceancity
Is there a spawn family box that would work?

Until you measure it, one would guess boxes designed for FE103... Suzy Chang or Solo 103 would be my call.

Those benefit from phase plugs.

dave

Brisso57 · 4th November 2008, 05:49 AM

Quote:

Originally posted by planet10
An early ceramic magnet FE103

dave

Is this another ceramic "103"?
(It's from a Sony R2R)

cheers

Doug

planet10 · 4th November 2008, 05:56 AM

Quote:

Originally posted by Brisso57
Is this another ceramic "103"?

It is from the same niche, you can see the inverted cloth surround, but has a smaller magnet than most.

dave

Brisso57 · 4th November 2008, 06:11 AM

Quote:

Originally posted by planet10

It is from the same niche, you can see the inverted cloth surround, but has a smaller magnet than most.

dave

I've not heard this one. Are the ceramic 103's comparable sonically to the alnico series?
ie Should I bother buying and trying? or stick to alnico?

Doug

2nd November 2008, 02:48 AM	#1
oceancity diyAudio Member Join Date: Jun 2008	Which Fostex is this? I've been given a pair of 4 inch drivers. Fostex 10F02C is written on the magnet. I haven't found those numbers on the Fostex site although they do look like the discontinued FE103.... Anyone know this code?

2nd November 2008, 03:05 PM	#4
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	An early ceramic magnet FE103 dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

2nd November 2008, 05:46 PM	#5
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	Interesting how they reverted to the numbering system from the Foster days. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

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2nd November 2008, 05:02 AM	#2
BHTX diyAudio Member Join Date: Feb 2006	Sorry, I know nothing about them. However, I found these photos on a Google cached page of a previous eBay auction..

2nd November 2008, 07:54 AM	#3
oceancity diyAudio Member Join Date: Jun 2008	Thanks for those photos BHTX, They' re just like the ones I've got. I mounted them in a 6 litre vented enclosure that was lying around from a previous experiment and the result is promising. The bottom end is quite pronounced and a bit woofy, They might work better in a sealed box. the mids are fine. The top end is nothing to write home about, and would benefit from a tweeter maybe?but they're OK. Now if someone knows exactly what they are I will be able to make the right box for them and then I think they are a proposition.

2nd November 2008, 08:56 PM	#6
oceancity diyAudio Member Join Date: Jun 2008	Thanks Dave. Is there a spawn family box that would work? If not it looks like a 3.6 L BR box might be the go.

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