If that is a wave "guide," the surface should be smooth. Otherwise, it defeats the purpose.
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- Thread starter Pearljam5000
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I do not think a brushing or rough surface from casting will influence the effectiveness or performance of the waveguide. Such unevenness is way below 0.2mm, and the smallest wavelength to be reproduced is 17mm. A lot of waveguides have an uneven surface, may it result from lacquering or casting.
Roy_D
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No that's the beauty of linseed treatment - yes you can polish with a rag and oil to a high shine but if you just apply then rub off all it does is keep the finish as it is now - no shine, no oxidation =]
In other words, a tweeter is such a tiny thing, that emits quite high frequency sounds that doesn't need a wave 'guide' to transfer your favourite drum brushes and cymbals to your ears.
Doenerkunde
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Quint Audio PostRetro DIY kit, employing a Radian coax with a 3 Inch beryllium tweeter and acoustic 72dB crossover filters.
12th order filters? Normally 8th order is as steep as needed to eliminate any kind of blended handoff.
I don't prefer xovers that steep as one driver stops and the other continues. It's better to blend and make them seamless.
I don't prefer xovers that steep as one driver stops and the other continues. It's better to blend and make them seamless.
Doenerkunde
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Acoustic 12th order, electric will be much lower. Crossover frequency is pretty low:
Directivity looks good:
I understand the difference between electrical and acoustic filters.
If I were them, I'd focus on the woofer breakup at 1.2k a little more. It is only 21dB down and should be closer to -40dB. Directivity should look good being a coaxial and well implemented.
If I were them, I'd focus on the woofer breakup at 1.2k a little more. It is only 21dB down and should be closer to -40dB. Directivity should look good being a coaxial and well implemented.
It appears that at that frequency, a structural failure occurs with the cone. A crossover will not be able to rectify a structural failure. One can mask the issue by using or changing certain electrical components, but the inability of the speaker cone to move as a single unit, which is a material problem, will always persist.
What, the cone shatters into shards, launching shrapnel and debris?
Best read a bit, why cone breakup happens.
Woofer breakup occurs when a speaker cone stops moving as a single unit and starts flexing or resonating due to its material or size limits. Which, in other words named as "structural failure" because the cone deforms, adding distortion. If the speaker uses a soft or thin cone, it might flex at 1.2 kHz, causing peaks or dips in the frequency response. Stiffer materials like coated paper, aluminium, or Kevlar push breakup higher. But, the chance of cone breakup is always there. One can cheat oneself with using or changing certain electrical components.
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I know what cone breakup is. SMDHBest read a bit, why cone breakup happens.
Woofer breakup occurs when a speaker cone stops moving as a single unit and starts flexing or resonating due to its material or size limits. Which, in other words named as "structural failure" because the cone deforms, adding distortion.
Anybody else remember a Mod asking that the design discussion be taken elswhere outside of this thread?
Vladimir Filevski
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It is smooth enough. You don't have even the slightest idea how much smoothness is required.
Small tweeter does not need waveguide to transfer cymbals to ears, but waveguide shapes tweeter directivity to be better. You don't have even the slightest idea what the waveguide is, what it is doing and how much big it should be to work properly. HInt: waveguide/horn mouth circumference should be at least one wavelength of the lowest frequency of the tweeter.In other words, a tweeter is such a tiny thing, that emits quite high frequency sounds that doesn't need a wave 'guide' to transfer your favourite drum brushes and cymbals to your ears.
Charging certain electrical components? I hope it is Google translate fail, otherwise it is
Cone breakup is not "catastrophic failure" as you think. If it is catastrophic, cone will be disintegrated. It will not.Best read a bit, why cone breakup happens.
In some previous post I politely asked you to spare us from your laughable musings about technical sides of loudspeakers. Please stop embarrassing publicly yourself with your ignorance about the basic science stuff.
BDE
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Some classics from Braun:
LE1:
Braun wall system:
L2 (also known as the washing machine)
LE1:
Braun wall system:
L2 (also known as the washing machine)
Wasn’t LE1 actually a Quad esl in disguise?Some classics from Braun:
LE1:
Braun wall system:
L2 (also known as the washing machine)
OP
Pearljam5000
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I'm starting to like the design
That is, if you know sopromat.It is smooth enough. You don't have even the slightest idea how much smoothness is required.
Small tweeter does not need waveguide to transfer cymbals to ears, but waveguide shapes tweeter directivity to be better. You don't have even the slightest idea what the waveguide is, what it is doing and how much big it should be to work properly. HInt: waveguide/horn mouth circumference should be at least one wavelength of the lowest frequency of the tweeter.
Charging certain electrical components? I hope it is Google translate fail, otherwise it is
Cone breakup is not "catastrophic failure" as you think. If it is catastrophic, cone will be disintegrated. It will not.
In some previous post I politely asked you to spare us from your laughable musings about technical sides of loudspeakers. Please stop embarrassing publicly yourself with your ignorance about the basic science stuff.
If that is the case, you shouldn't have replied, to what I replied to Wolf.
Once a non-elastic cone (material) reaches its breakup frequency (e.g., 1.2 kHz in this case), it cannot bounce back, and its integrity suffers a significant blow. Once that occurs, it is no longer the cone it was prior to that event. It is a damaged cone, even if the damage is not visible to the naked eye. One might attempt to assist that cone by changing electrical components, but you are still using a damaged cone (material).
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