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Old 18th May 2011, 05:01 PM   #1
Helmuth is offline Helmuth  Netherlands
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Default Kugelwellen Horn.

Hi Today I received a set of Kugelwellen horns.

I have a 2inch driver a Paudio (400Hz)horn and now the KH55 (250Hz) Kugelwellen. I bolted it on and listened with the first sound I could here the open smooth sound of the horn Yes it appears that this will give a great combo together.


My measurement gear stands in my livingroom because I am experimenting a lot with the passive filter.

So direct a MLS measurement done What a smooth response and what a nice top end I can easily correct a bit with a RC filter.

Click the image to open in full size.
Attached Images
File Type: jpg Schermafbeelding 2011-05-18 om 18.39.17.jpg (22.3 KB, 977 views)
File Type: jpg Schermafbeelding 2011-05-18 om 18.39.00.jpg (36.1 KB, 1022 views)
File Type: png 50cm kugelwellen KH55.png (48.3 KB, 973 views)
File Type: png 50cm thd kugelwellen kh55.png (40.2 KB, 960 views)
File Type: png stepresponse 2 kugelwellen KH55.png (41.4 KB, 154 views)
File Type: png paudio horn.png (45.2 KB, 203 views)
File Type: png thd paudiohorn.png (25.9 KB, 193 views)
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Last edited by Helmuth; 18th May 2011 at 05:03 PM.
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Old 18th May 2011, 05:33 PM   #2
Helmuth is offline Helmuth  Netherlands
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Here a user who made a film of the horn. Even then you can here the open sound of the horn listen.
YouTube - Tube amp - se kt88, jbl 2226, altec 288
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Old 18th May 2011, 05:55 PM   #3
Helmuth is offline Helmuth  Netherlands
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I was planning to make tractrix horns my self I could not done better my self and even the cost for parts would come to the same cost of these horns with professional finish an aluminum adapter I am very pleased with the quality.
Attached Images
File Type: jpg Schermafbeelding 2011-05-18 om 19.59.45.jpg (13.3 KB, 176 views)
File Type: jpg Schermafbeelding 2011-05-18 om 19.59.59.jpg (50.7 KB, 156 views)
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Last edited by Helmuth; 18th May 2011 at 06:04 PM.
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Old 18th May 2011, 06:08 PM   #4
ra7 is offline ra7  United States
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where did you buy these from?
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Old 18th May 2011, 06:11 PM   #5
Helmuth is offline Helmuth  Netherlands
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Quote:
Originally Posted by ra7 View Post
where did you buy these from?
Ebay search kh55 or kh75 or JABO. The manufacturer of the horn sells them.
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Last edited by Helmuth; 18th May 2011 at 06:14 PM.
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Old 18th May 2011, 06:42 PM   #6
ra7 is offline ra7  United States
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Thanks! I'll check it out. I'm building some paper horns with my friend John (inlowsound.com). Can't wait to see how they turn out.

In your first post, the step response is not very clean. Is that ringing we are seeing?
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Old 18th May 2011, 07:52 PM   #7
Helmuth is offline Helmuth  Netherlands
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Quote:
Originally Posted by ra7 View Post
Thanks! I'll check it out. I'm building some paper horns with my friend John (inlowsound.com). Can't wait to see how they turn out.

In your first post, the step response is not very clean. Is that ringing we are seeing?
The driver has a titanium dome it is often seen with that kind of diaphragm. Although it changes with position of the microphone and my more professional HBX V6 mls program.
Measured without any correction or filter direct connected to my reverence hypexclass-d amplifier.

You see unbelievable flat response from 550Hz up to 9kHz them it needs a snubber looks like some breakup.

first : response with blackman and 1/3 smoothing

Second : response without any kind of smoothing raw measuring points.

thirt : stepresponse

Last : MLSimpulse all measured about 0,5mtr away from horn mouth center.
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Last edited by Helmuth; 18th May 2011 at 08:11 PM.
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Old 18th May 2011, 11:07 PM   #8
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how's the dispersion ?
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Old 18th May 2011, 11:18 PM   #9
limono is offline limono  United States
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I have the same horns bolted to TAD TD-4001 (400Hz) and I like the combo quite a bit , much more that 340Hz Dr. Edgar tractrix. To be honest Edgar himself didn't like Tad on his horn either .It is not tractrix though but exponential (jabo) and I was informed that the cut off is 320 Hz not 250.
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Old 19th May 2011, 07:53 AM   #10
Jmmlc is offline Jmmlc  France
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Hello Helmuth,

Nice horn.

Too bad it is a bit too much truncated at the mouth!

See a complete kugelwellen profile in the attached graph.

Best regards from Paris, France

Jean-Michel Le Cléac'h



Quote:
Originally Posted by Helmuth View Post
Hi Today I received a set of Kugelwellen horns.

I have a 2inch driver a Paudio (400Hz)horn and now the KH55 (250Hz) Kugelwellen. I bolted it on and listened with the first sound I could here the open smooth sound of the horn Yes it appears that this will give a great combo together.


My measurement gear stands in my livingroom because I am experimenting a lot with the passive filter.

So direct a MLS measurement done What a smooth response and what a nice top end I can easily correct a bit with a RC filter.

Click the image to open in full size.
Attached Images
File Type: gif kugelwellen.gif (4.1 KB, 143 views)
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