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Multi-Way Conventional loudspeakers with crossovers

S. Harsch XO
S. Harsch XO
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Old 27th July 2015, 02:44 PM   #11
BYRTT is offline BYRTT  Denmark
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S. Harsch XO
Zvu,

Is it this build by vulejov you listened LINK: Visaton B80.
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Old 27th July 2015, 03:56 PM   #12
Zvu is offline Zvu  Serbia
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Yes. That's the speakers I listened.
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Old 27th July 2015, 10:19 PM   #13
panjilaras is offline panjilaras  Indonesia
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Is this the same method as jmlc quasi optimal crossover posted somewhere
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Old 27th July 2015, 10:41 PM   #14
xrk971 is offline xrk971  United States
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S. Harsch XO
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Originally Posted by panjilaras View Post
Is this the same method as jmlc quasi optimal crossover posted somewhere
I don't know, I am not familiar with JMLC xo. Do you have a link?
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Old 27th July 2015, 10:56 PM   #15
ra7 is offline ra7  United States
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S. Harsch XO
X, great work as always, but I'm not convinced that there are benefits to having flatter phase. Have you done any testing that suggests you can hear the difference between perfectly flat phase and phase changes introduced by, say, LR4 crossovers? Look at rePhase. It will allow you to play with such things.

Most of the differences that people hear in different crossover topologies come from differences in the on- and off-axis frequency response.
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Old 27th July 2015, 11:38 PM   #16
xrk971 is offline xrk971  United States
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X, great work as always, but I'm not convinced that there are benefits to having flatter phase. Have you done any testing that suggests you can hear the difference between perfectly flat phase and phase changes introduced by, say, LR4 crossovers? Look at rePhase. It will allow you to play with such things.

Most of the differences that people hear in different crossover topologies come from differences in the on- and off-axis frequency response.
Thanks. I can hear a difference with guitar and drums and on-axis. Let me see if I can record sound clips of a speaker with the Harsch XO vs identical LR2 XO.

In the room listening - it is not subtle definitely can hear it.

It may be less obvious in a recording though but we will see. I will give you guys a blind listening test.
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Old 27th July 2015, 11:55 PM   #17
chris661 is offline chris661  United Kingdom
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Interested to hear the listening test.

Chris
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Old 28th July 2015, 07:27 AM   #18
Juhazi is offline Juhazi  Finland
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This kind of asymetric xo is an old trick. I ran to it when I measured my Amphion Helium IIs. It has like B2 for bass and LR4 for tweeter. I can't hear the difference! Here "inverted" is the factory default setting, it gives nice step response!
Attached Images
File Type: png he2 polarity step.png (52.9 KB, 902 views)
File Type: png helium2 phase vs inverted.png (69.3 KB, 900 views)
File Type: png he2 polarity spl 0¤ 6ms nosmo.png (63.8 KB, 885 views)
File Type: png helium2 0¤ xo invert 9ms 148.png (81.7 KB, 884 views)
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Last edited by Juhazi; 28th July 2015 at 07:32 AM.
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Old 28th July 2015, 08:02 AM   #19
phase_accurate is offline phase_accurate
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Neither one - inverted or non-inverted - shows any special kind of step response !
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Old 28th July 2015, 08:53 AM   #20
blakkshepeaudio is offline blakkshepeaudio  Australia
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In a previous life at a commercial speaker factory asymmetrical (passive) crossovers were the norm. Having said that, the Harsch, and XRK's derivatives, look like a neat and maybe repeatable solution for some applications. Can't wait to try this on my PAudio Coaxs !
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