Kugelwellen Horn.

Helmuth · 05:03 PM

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.

Helmuth · 18th May 2011, 05:33 PM

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

Helmuth · 06:04 PM

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.

ra7 · 18th May 2011, 06:08 PM

where did you buy these from?

Helmuth · 06:14 PM

Quote:

Originally Posted by ra7

where did you buy these from?

Ebay search kh55 or kh75 or JABO. The manufacturer of the horn sells them.

ra7 · 18th May 2011, 06:42 PM

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?

Helmuth · 08:11 PM

Quote:

Originally Posted by ra7

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.

norman bates · 18th May 2011, 11:07 PM

how's the dispersion ?

limono · 18th May 2011, 11:18 PM

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.

Jmmlc · 19th May 2011, 07:53 AM

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

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.

18th May 2011, 05:33 PM	#2
Helmuth diyAudio Member Join Date: Oct 2008 Location: Winterswijk	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 __________________ ( (( KUGELWELLE )) ) recent projects :OB-mk1 /fatboy / monitor-xl / Horn-AM / dappolito / td124-mk1-rb301 / Hybrid-pse / Vfet

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18th May 2011, 06:08 PM	#4
ra7 diyAudio Member Join Date: Feb 2009 Blog Entries: 1	where did you buy these from?

18th May 2011, 06:42 PM	#6
ra7 diyAudio Member Join Date: Feb 2009 Blog Entries: 1	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?

18th May 2011, 11:07 PM	#8
norman bates diyAudio Member Join Date: Nov 2003 Location: iowa	how's the dispersion ?

18th May 2011, 11:18 PM	#9
limono diyAudio Member Join Date: Mar 2007	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.