If its global then it can be corrected with EQ, otherwise it can't.
The number one choice was black... If I could beat it with some other palate, then ok, but if not, default to black. So here we are and I'm loving it. A few more coats on the innards and I should be able to get a more consistent shade. I just can't do nicotine yellow 🤮
Once I get it black enough and use up all the pure tung oil, I can go for the glass colored clear coat.
Once I get it black enough and use up all the pure tung oil, I can go for the glass colored clear coat.
this one or even custom made bigger one?
https://www.lautsprechermanufaktur-heyder.de/en-us/lmh-horns/etrak-horns
https://www.lautsprechermanufaktur-heyder.de/en-us/lmh-horns/etrak-horns
btw,
the whole discussion can be reduced to the fact that a point source is good for a really realistic soundstage representation
here a massive example, with the big hall and the long listening distance this is still a point source
https://www.diyaudio.com/community/...t-work-with-whizzer-cones.410910/post-7646414
in my small home office i have swapped from the XT1464 horn stuff to this one
in my small room much more realistic soundstage representation
measurement taken about 30 degree off axis - on axis the waveguide make a really bad break up at 5kHz with the Sonido FR chassis
the whole discussion can be reduced to the fact that a point source is good for a really realistic soundstage representation
here a massive example, with the big hall and the long listening distance this is still a point source
https://www.diyaudio.com/community/...t-work-with-whizzer-cones.410910/post-7646414
in my small home office i have swapped from the XT1464 horn stuff to this one
in my small room much more realistic soundstage representation
measurement taken about 30 degree off axis - on axis the waveguide make a really bad break up at 5kHz with the Sonido FR chassis
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To make it even further point source, eliminate diffraction at mouth. If there is no sufficient rollover the mouth (diffraction) makes secondary sound source for some bandwidth, which might not fulfill definition of a point source anymore. Of course everything depends on how a point source is defined, in this real world implementation, if it's lack of crossover (group delay, distortion, so on) within some bandwidth then yeah, but if all sound sources being always within 1/4wl or so that no meaningful destructive interference happens to any direction is another matter, and whether secondary sound sources with the speaker (structure) are count in or not 🙂
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Cutoff means nothing, without designation... I asked for a 150hz and I got what I got... I think mine might a little larger than this.
Hi @tmuikku,
i think for the standalone FR chassis waveguide the JMLC horn (https://born.ro/jmlc.html) profile would be even better, better is the enemy of good 😉
here an example of JMLC profile for the FR chassis support
https://www.diyaudio.com/community/...t-work-with-whizzer-cones.410910/post-7646745
https://www.diyaudio.com/community/...t-work-with-whizzer-cones.410910/post-7646882
i think for the standalone FR chassis waveguide the JMLC horn (https://born.ro/jmlc.html) profile would be even better, better is the enemy of good 😉
here an example of JMLC profile for the FR chassis support
https://www.diyaudio.com/community/...t-work-with-whizzer-cones.410910/post-7646745
https://www.diyaudio.com/community/...t-work-with-whizzer-cones.410910/post-7646882
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holy moly @camplo, i checked the end user price list, a pair of this guys is really expensive
but if you have bought them at the thread start in 2019 probably 30 - 40 percent less...
sympathy for the devil - 666 posts in this thread
😉
for my budget when the huge room under the roof is ready i would like to take this guys here
https://www.bcspeakers.com/en/products/horn/1-4/0/ME464
i think there is a chance to reinforce it like this here
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Wall angles and roll offs. JMLC would of had proper roll offs but its all up to the designer. I think I may be happy with a round horn as the HF of a round horn vs an Elliptical, doesn't seem to differ too much.
Above the wavelength that is smaller than the diameter of the beginning of the throat, there is no reason. Below that, its still a matter of the design, there are no guarantees.
I assume you're familiar with BL(x) and Cms(x) ?
Have you ever modeled what this does to the actual system response?
The BL in particular.
There is nothing left of that system response anymore.
I have seen cases where the Fs shifted extremely significantly (well over 30-40%) and the Qt (= BL) peaked well over 3dB.
And before you're gonna say the same thing again, yes from actually high quality expensive loudspeakers.
And even in a situation with room modes, these effects are noticeable in a relative (quasi) static environment.
Any music noob can hear these kind of changes in EQ.
Sure this isn't a problem when big woofers are being used at baby sound pressure levels.
(since there is barely any cone excursion)
But since you put this as a general statement without additional context, it's important to explain the nuances.
Also, there is a direct relationship between Le(x) and (intermodulation) distortion.
I don't see much relationship between Cms(x) and any intermodulation components.
Although in theory this will always change IMD components, since it changes the system response itself as well as the low frequencies complex harmonics.
But a dropping/changing BL definitely has a direct effect on the overall driver performance as well as back EMF components.
I might be mistaken, but I think Klippel has a paper about this.
As for that distortion is always "bad", that is a totally different can of worms buried in a deep rabbit hole part of a philosophical chicken-egg story.
That is oddly specific... In case the phrase doesn't translate "When someone says something as if it is vague or hypothetical, but there is an unusual amount of detail"
I really do not like smoothed measurements. I know that our ears don't hear exactly how measurements show, sometimes, but, if there is a difference in measurement, theres a chance it is an acoustical difference that could be perceived. For some reason, smoothed FR/GD measurements, to me, are like Participation Trophies
"You get a smooth response! You get a smooth response! You get smooth response!... You are all getting smooth responses!"
Sorry, my mistake, i have realized that we have 666 pages of posts here, this is post nr. 13.316
@camplo,
take the representation you like more
look here
https://www.supravox.fr/en/products/215-exc-mk2-haut-parleur-large-bande-70w-93-a-102db-6-ohms
well known fullrange chassis manufacturer Supravox also still like 1/3 octave smoothed graphs
french people generally have a lot of tastefulness
@camplo,
take the representation you like more
look here
https://www.supravox.fr/en/products/215-exc-mk2-haut-parleur-large-bande-70w-93-a-102db-6-ohms
well known fullrange chassis manufacturer Supravox also still like 1/3 octave smoothed graphs
french people generally have a lot of tastefulness
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Heres mine
Unsmoothed is best for critical analysis, I'm not sure whats the use of smoothed response except for showing the trend in the face of large amounts of comb filtering.
Unsmoothed, this is a measurement I took outside, some leveling eq, 1meter
and a unsmoothed rough voicing indoors 1meter
Unsmoothed is best for critical analysis, I'm not sure whats the use of smoothed response except for showing the trend in the face of large amounts of comb filtering.
Unsmoothed, this is a measurement I took outside, some leveling eq, 1meter
and a unsmoothed rough voicing indoors 1meter
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@camplo
after having spent a fortune for horns, drivers, bass chassis etc. etc. you may consider to use your budget for this here
https://www.soundimports.eu/en/audiomatica-clio-pocket-2.html
https://www.audiomatica.com/wp/wp-content/uploads/cliopktman21.pdf
i'm out
after having spent a fortune for horns, drivers, bass chassis etc. etc. you may consider to use your budget for this here
https://www.soundimports.eu/en/audiomatica-clio-pocket-2.html
https://www.audiomatica.com/wp/wp-content/uploads/cliopktman21.pdf
i'm out
@SBA_SLOB_GUY you are going to have to convince me that these free measurement softwares aren't good enough.
https://www.roomeqwizard.com/
https://www.artalabs.hr/download.htm
https://meyersound.com/product/mapp-3d/
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Fyi: Equalizer APO has allpass filters... and the plugin can be completely bypassed if worried about latency.... otherwise, it is will process global audio so if you have a sound card like me, (focusrite) it is upstream of that.... I was think ing that I could possibly use this to test audibility of group delay? My headphones are down at the moment so I've been using my in-ear monitors. I could predict the group delay in VituixCad.