FE208E Sigma Back Loaded Horn Plans

mill23bay · 24th August 2011, 12:55 AM

Has anyone tried to build the back loaded horns for the FE208E using the Fostex plans. How do they sound?
Peter C.

ssssly · 24th August 2011, 02:37 PM

They sound pretty good for a relatively easy build. Warning, they are way heavy.

Puffin · 24th August 2011, 07:21 PM

Wot like these

Been using mine for 4.5 years now (206E drivers in the 208 cab)

Fantastic speakers. Weigh140 pounds each

chrisb · 24th August 2011, 08:41 PM

While all the cuts are square, there are rather a lot of them and I wouldn't exactly categorize them as a "relatively easy" build.

http://www.fostexinternational.com/d...ez_enclrev.pdf

I cut material for a buddy of mine to build a pair of similar enclosures for 206ESRs a few years back, and using 5x5 ft BB ply there were 5 sheets of material and lots of cursing to finish the pair.

They did sound mostly wonderful, although not without some issues, aside from being the size and weight of a small upright freezer.

That said, having heard several iterations of Woden BLH for Fostex and Mark Audio drivers ( i.e. Valiant/Maeshowe and Victor), I'd be inclined to consider the Vulcan for 208 - provided Scott can determine the driver is suitable.

Woden Design | Vulcan

of course these are taller than the Fostex design, but nowhere near as heavy

mill23bay · 26th August 2011, 04:44 PM

Thank you for your input. I thinking of these because the speaker is still around. But because I found a pair of FE207E's I will build a pair of half Chang's but in the style of the Curvy type.
Peter C.

Scottmoose · 26th August 2011, 04:47 PM

Why are you curving the front of Half Chang?

503Timber · 26th August 2011, 04:52 PM

Quote:

Originally Posted by Scottmoose

Why are you curving the front of Half Chang?

My guess is nothing more than looks? I can't imagine as it would improve or do anything sonically......

Scottmoose · 26th August 2011, 04:54 PM

Per my comment on the other thread, I haven't had chance to make any proper checks yet, but it will throw the alignment somewhat out of kilter. The curve on the full sized design is not an aesthetic addition, it's functional.

503Timber · 26th August 2011, 04:58 PM

Quote:

Originally Posted by Scottmoose

Per my comment on the other thread, I haven't had chance to make any proper checks yet, but it will throw the alignment somewhat out of kilter. The curve on the full sized design is not an aesthetic addition, it's functional.

I'm not familiar with the other thread but if it's functional on the other why not the Half? Forgive my ignorance I'm very new to all this and trying to learn.

Scottmoose · 26th August 2011, 05:00 PM

It provides focused radiation. The focal point is dependent upon the curve HxWxD dimensions and the driver location within it.

24th August 2011, 12:55 AM	#1
mill23bay diyAudio Member Join Date: Feb 2009 Location: Toronto	FE208E Sigma Back Loaded Horn Plans Has anyone tried to build the back loaded horns for the FE208E using the Fostex plans. How do they sound? Peter C.

24th August 2011, 08:41 PM	#4
chrisb diyAudio Member Join Date: Aug 2002 Location: victoria BC	While all the cuts are square, there are rather a lot of them and I wouldn't exactly categorize them as a "relatively easy" build. http://www.fostexinternational.com/d...ez_enclrev.pdf I cut material for a buddy of mine to build a pair of similar enclosures for 206ESRs a few years back, and using 5x5 ft BB ply there were 5 sheets of material and lots of cursing to finish the pair. They did sound mostly wonderful, although not without some issues, aside from being the size and weight of a small upright freezer. That said, having heard several iterations of Woden BLH for Fostex and Mark Audio drivers ( i.e. Valiant/Maeshowe and Victor), I'd be inclined to consider the Vulcan for 208 - provided Scott can determine the driver is suitable. Woden Design \| Vulcan of course these are taller than the Fostex design, but nowhere near as heavy __________________ you don't really believe everything you think, do you? community sites t-linespeakers.org, frugal-horn.com commercial site planet10-HiFi

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24th August 2011, 02:37 PM	#2
ssssly diyAudio Member Join Date: Aug 2007	They sound pretty good for a relatively easy build. Warning, they are way heavy.

24th August 2011, 07:21 PM	#3
Puffin diyAudio Member Join Date: Feb 2006 Location: U.K	Wot like these Been using mine for 4.5 years now (206E drivers in the 208 cab) Fantastic speakers. Weigh140 pounds each

26th August 2011, 04:47 PM	#6
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	Why are you curving the front of Half Chang?

26th August 2011, 04:54 PM	#8
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	Per my comment on the other thread, I haven't had chance to make any proper checks yet, but it will throw the alignment somewhat out of kilter. The curve on the full sized design is not an aesthetic addition, it's functional.

26th August 2011, 05:00 PM	#10
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	It provides focused radiation. The focal point is dependent upon the curve HxWxD dimensions and the driver location within it.

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