Driver inside of mouth of a folded conical horn

ultrakaz · 14th May 2009, 06:36 AM

Hello, has anyone of you built such a speaker? I've seen two pictures posted in other threads, but no comments as to how they sound or how to design one. I recall seeing one posted by hm with a Lowther driver and another by GM that looked vintage; circa 1950s.

I'm curious as to how to design and build one. Is it as simple cutting a conical horn in half and sticking the smaller half (reverse) into the larger half? Or is it something where a compression chamber or loading of some sort is created behind the driver and then exhausts into the throat of the horn? Or is it something completely different?

Would high QTS drivers be applicable given the short path akin to an open baffle?

Any help is appreciated. Thanks.

HareBrained · 14th May 2009, 07:57 PM

Hmmmm. I don't know what you're talking about but ...

You could be referring to a driver with a front loaded horn (FLH) and rear loaded horn (RLH). Or a wave-guide front (very shallow horn). Or your could be referring to a "tapped" horn. This is where there's one horn but the driver is connected in two locations, one side near the terminous and one near the mouth.

Or is it something entirely different?

Jeb-D. · 14th May 2009, 08:34 PM

It seems like you are referring to a tapped horn. Do a search for "tapped horn" and see what comes up.

ultrakaz · 14th May 2009, 09:02 PM

Not a tapped horn.

Scroll down to post #7 by GM:

Front & rear end DUAL Back Loaded Horn + Bass Reflex Hybrid Enclosure

jamikl · 15th May 2009, 01:41 AM

I think he might be describing a reflex horn as seen in public address systems, but is interested in a higher fi version. I made a small corner horn like this once. Speaker was in small chamber right in corner, 1st part of horn out towards the room centre, second part back to the corner and the third part was the walls.
jamikl

hm · 16th May 2009, 08:13 PM

Hello,

this he had in mind.

ultrakaz · 16th May 2009, 10:58 PM

Yes, that is it.

Thanks.

Looking at it again, I think it is more like an Onken.

Now if I could only hear one.

tinitus · 16th May 2009, 11:42 PM

another

hm · 17th May 2009, 05:50 AM

Hello,

"Looking at it again, I think it is more like an Onken."

not when you look at the plan.
http://www.hm-moreart.de/29.htm

el`Ol · 17th May 2009, 08:07 AM

I once built ceiling firing speaker with driver directly beside the relatively small mouth. I wouldn´t say it satisfied me, but there was a clear difference in bass extension when I placed a board between mouth and driver.

14th May 2009, 06:36 AM	#1
ultrakaz diyAudio Member Join Date: Oct 2004	Driver inside of mouth of a folded conical horn Hello, has anyone of you built such a speaker? I've seen two pictures posted in other threads, but no comments as to how they sound or how to design one. I recall seeing one posted by hm with a Lowther driver and another by GM that looked vintage; circa 1950s. I'm curious as to how to design and build one. Is it as simple cutting a conical horn in half and sticking the smaller half (reverse) into the larger half? Or is it something where a compression chamber or loading of some sort is created behind the driver and then exhausts into the throat of the horn? Or is it something completely different? Would high QTS drivers be applicable given the short path akin to an open baffle? Any help is appreciated. Thanks.

17th May 2009, 05:50 AM	#9
hm diyAudio Member Join Date: Feb 2004 Location: near Hamburg Germany	Hello, "Looking at it again, I think it is more like an Onken." not when you look at the plan. http://www.hm-moreart.de/29.htm __________________ http://www.hm-moreart.de

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14th May 2009, 07:57 PM	#2
HareBrained diyAudio Member Join Date: Mar 2009	Hmmmm. I don't know what you're talking about but ... You could be referring to a driver with a front loaded horn (FLH) and rear loaded horn (RLH). Or a wave-guide front (very shallow horn). Or your could be referring to a "tapped" horn. This is where there's one horn but the driver is connected in two locations, one side near the terminous and one near the mouth. Or is it something entirely different?

14th May 2009, 08:34 PM	#3
Jeb-D. diyAudio Member Join Date: Nov 2005 Location: SoCal	It seems like you are referring to a tapped horn. Do a search for "tapped horn" and see what comes up.

14th May 2009, 09:02 PM	#4
ultrakaz diyAudio Member Join Date: Oct 2004	Not a tapped horn. Scroll down to post #7 by GM: Front & rear end DUAL Back Loaded Horn + Bass Reflex Hybrid Enclosure

15th May 2009, 01:41 AM	#5
jamikl diyAudio Member Join Date: May 2005 Location: Melbourne	I think he might be describing a reflex horn as seen in public address systems, but is interested in a higher fi version. I made a small corner horn like this once. Speaker was in small chamber right in corner, 1st part of horn out towards the room centre, second part back to the corner and the third part was the walls. jamikl

16th May 2009, 10:58 PM	#7
ultrakaz diyAudio Member Join Date: Oct 2004	Yes, that is it. Thanks. Looking at it again, I think it is more like an Onken. Now if I could only hear one.

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