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Old 1st April 2011, 02:02 PM   #41
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Location: In an old house on a hill needing repair looking over an old cemertry.
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Old 13th July 2011, 12:59 PM   #42
PeterKr is offline PeterKr  Germany
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Hello Ivo, I can the plans for the RT-3 to get from you?

Peter
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Old 22nd August 2011, 04:13 PM   #43
Ivo is offline Ivo  Netherlands
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Hello Peter,

Sorry for the very late reply, I was in the middle of moving from city to city. I have the files on a disk, which is still in a box somewhere. I will contact you when I have access to the files.

Ivo
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Old 9th May 2013, 06:32 AM   #44
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Default Larger Driver

The Klason Horn is intended to be operated as a single sub-woofer below 100 Hz. As such, the design could be scaled to match the superior performance of an 18" or 21" driver such as those made by Precision Devices (see attached PDFs).

Regards,
WHG
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File Type: pdf PD1850DataSheet110912.pdf (287.7 KB, 31 views)
File Type: pdf PD2150DataSheet110912.pdf (288.6 KB, 11 views)
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Old 10th May 2013, 02:39 PM   #45
Ivo is offline Ivo  Netherlands
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Hello Bill, nice to see you again. We "met" on the old Cornu forum back in the day.

Which of the versions would you scale up? It seems that the newer version of the RT1 (the old familiar Klasonhorn as was known in Europe from the Klinger loudspeakerbook) had the most extended and linear response. But, with your expertise, which one would you choose?
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Old 10th May 2013, 04:28 PM   #46
Ivo is offline Ivo  Netherlands
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Here are some simulations of various version of the Klasonhorn. In simulations of the last two versions, RT2 and RT3, the part of the horn "under the cabinet" is excluded from the simulation. The reason given is that simulation without that last segment lines up better with known response measurements. I wonder why it would have worked in iteration RT1, but not in RT2 and RT3.

RT1

RT2

RT3
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Old 10th May 2013, 04:52 PM   #47
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Default dimensions klason strange

i found this in an old dutch book
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Old 10th May 2013, 07:54 PM   #48
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Quote:
Originally Posted by Ivo View Post
Hello Bill, nice to see you again. We "met" on the old Cornu forum back in the day.

Which of the versions would you scale up? It seems that the newer version of the RT1 (the old familiar Klasonhorn as was known in Europe from the Klinger loudspeakerbook) had the most extended and linear response. But, with your expertise, which one would you choose?
Hi Ivo,

As part of the scaling effort, I would try to use the space in the triangular foot to house the driver. Then bifurcate the passage from there into the body of the enclosure. A curved front panel, ala Ranger's Paragon, might contribute to the enclosures aesthetics as well.

Regards,

Bill
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Old 10th May 2013, 07:56 PM   #49
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Bill, do you know whatever happened to Daniel's forum? I went looking a while back and could not find it. I remember you being very helpful to me all those years ago.
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Old 10th May 2013, 08:48 PM   #50
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Quote:
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Bill, do you know whatever happened to Daniel's forum? I went looking a while back and could not find it. I remember you being very helpful to me all those years ago.
Hi Cal,

Cornu

Sans English version.

Regards,

Bill
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