What's not to love here, double sided sticky tape, soda can aluminium, cheap cordless drill, kitchen stool work benches and a fabulous result. If you don't doff your cap to this young man then life really s a lemon.
NOTE: as the viewer Atelierul 29 kindly awared me, the speaker design used in this video was not created by Tech Ingredients (card in the video) as I (wrongly) commented in the video. It was made by Paul G.A.H. Voigt on the granted patent: GB447749 (A) ― 1936-05-18.
Tech Ingredients version is clearly using this patent but its not exactly this type of speaker as he modified it with that curved bottom. In oryginal that space is flat and that is how standing wave inside the speaker is created->height of this speaker inside=>Quarter Wavelength Loudspeaker. If someone want smaller height with weaker driver but not lose the low frequency he should check => Tapered Wave Tube with Damp-Duct (TWTD) [or ML-Voigt] [or "Sifted Mouth-TQWT"]. But most popular version that is the half height is TQWT where that triangle inside is simply folded once. Because it is then creating rectangle shape it is also boosting slighty the mid-base with the box structure.
Voigt does not have an "H" in his name by the way. The post above also is correct but left off another Voigt Pipe variant that is a folded Voigt pipe that is then reverses so that the "port" is now rear facing. Google the Frugalhorn speaker design. IT is a Tapered Quarter Wave Tube variation. There is a version that has an elegant rear port quasi-horn flair made out of foamcore board as a cheap test bed speaker project that is on the DIYaudio site.
@@sjhorton1184 not sure how well that would work putting out the wave right into the wall, might give a fuller volume but it will be messy. Voigt pipes are meant to be measured based on your room size according to 'real world audio' guy, 2m voigt producing about 22hz and needing a 16m room for a full waveform. 8 for a half wave. Less than a foot to the wall can't be good.
Hi, unfortunatelly, I couldn't record an audio test in this video. But you can see this speaker working (in comparison with others) in this one: th-cam.com/video/co18T94ozdY/w-d-xo.htmlsi=CXvIGr-iChIVTaSy
@@projectcue9150 Thanks! I have seen recommendations on port areas between 225-300 percent of the driver membrane area (Sd), but it looks to me as if the opening is slightly smaller than that, judging by the pics.
The speaker height should be close to ear height, whatever that is in your room. For tone you can either go deadwood (mdf, no tonal qualities, so wouldn't really matter only ear height) or you can go instrumental so you hear the woods resonances. People were talking about using piano chords and sizing the panels/bracing to match that sound. Similar to how they brace guitars and double basses etc. Also avoid tech ingredients, he likes to look smart but misses so many details because he doesn't have any true understanding. Real world audio (French guy) has all the details and understanding you need.. All of them. Real speaker guy.
@@luminousfractal420 "He likes to look smart"? The guy also builds rocket engines, cooks hamburgers with a laser, build an LRAD system, makes graphene, makes hard cider for Halloween....
I didn't build the bigger version to compare, but the sound of this one is pretty clear and powerful enough to a living room. The sound balance is very, very good.
Good luck. Hopefully the guide provided in my website will help you with the process. If you need any tip, just send a message. I'll try my best to help.
Hi Michail. As I said in the video, you can find all the measures in this link: www.coolusefuleasy.com/passive-speaker that is in the video description. There you will find the measures, bill of materials and tips to build one speaker just like the one that you saw in the video. About the audio samples, unfortunately, I don't have the necessary resources to produce it. But the speakers didn't desappointed me. It sounds really good.
Hi @@jesusgavemeaids (curious name), It's according the video that I embased the construction of the speaker (check the card in the video and you will understand). Best regards.
Hi Roy. This was an important point that I missed in this video. But if you take a look in the end of this following video: th-cam.com/video/co18T94ozdY/w-d-xo.html, you will see the sound testing that you were looking fore. Hope you enjoy it.
Did you even watch the video from Tech Ingredients. This is not even close to the scientific process he described. Just by scaling it down you ruin the 1/4 wave phase of the design because you need the length to account for the speed of sound. Not to mention the lack of mass and completely eliminating the dampening. Just because it looks like a smaller version doesn't make it one.
@@projectcue9150 on ya for copping this criticism from Brian with a good attitude. 👍 He is right tho.... Learning about the complex world of acoustics is full of mistakes and misunderstandings. The MOST IMPORTANT PART BY FAR is that you actually have a go tho, and build somthing. Well done. Cheers
Thank you Dan. I'm aware that I don't know everything and all criticism are welcomed. This will always makes me improve future videos. Hope you keep watching the channel to see the improvements (Or to send some critics when it is not so good).
Simple math. 1/4 wave length is adjusted due to the smaller size drivers he used here 🤦🏻♂️ Can’t believe the ignorance of some of you here in the comments section. Great job man I’m sure it sounds great. These guys obviously don’t know that speakers aka drivers come in different sizes and their enclosures will be according to their size
Thank you for the advice. I considered that when the speakers were done, but, as they are mounted with its back really close to a wall, it didn't make much difference to make some compensation.
Hahaha, this one is good joke, the internal wood filling horn space, sure You calculated volume of wood pieces into volume of horn. Did You made any calculation of horn at all? Only good in its video are TB drivers. EDIT: I thought its TB, just realized its aiyima drivers. My mistake.
Hi, I used the measures references of the patent: GB447749 (A) ― 1936-05-18. There you can find a nice work of calculation of the internal volume of the speaker. I tried to compensate the wood filling horn space with thinner walls, but I couldn't do it 100% as I would like to. But, thank you for your comment. It will make me improve the future videos of this channel. I bet you would be amazed with the sound that this speakers make, despite your criticism.
@@projectcue9150 im sorry to inform You, it doesn't work that way, horn way should not be obstructed by any internal bracing it causes turbulance. Calculations for any horn enclosure are very strict for exact driver. Same with filling volume and filling density. Also top hole its not "artistic touch' its there for reason. Thinnering walls will cause You box resonances :) also aluminium with this thickness will resonate. Hope You understand why i criticise You so much. If it fulfills Your sound quality expectations then im happy for You. Hope Your next project will be better. Everyone started somewhere.
The miniature of a Ferrari is not a Ferrari ... Therefore the miniature of a "Second best speaker in the world" is NOT a "Second best speaker in the world" !!!
Oh, you are 100% right. It is just a "smaller version". Unfortunately, I didn't build the bigger one and don't have the tools to compare the sound quality between them. If you could do that for us, that would be brilliant. I would really apreciate to watch it.
It amazes me how some people can be so dumb while trying to sound smart. You do know that speakers come in different sizes right just like Ferrari come in different models?! Still a Ferrari genius 🤦🏻♂️ He obviously used smaller speakers here this the size of the enclosure is different. He even states that he used the formula to build them.
@@iargueta1220 Someone designed this specific loudspeaker calculating wavelenghts , reflex responses , and many relative distances from holes and loudspeakers . "Rescaling" a loudspeaker totaly ruins the concept and the response behaviour of the prototype .
@@micx2056 I don’t think you understand what that means. The loudspeaker itself is “rescaled” by the fact that it is smaller than the prototype, therefore the enclosure must be rescaled. If he were to put the smaller loudspeakers in the same size enclosure of the prototype, which are much bigger loudspeakers, then that would definitely throw off the sound quality. Manufacturers make speakers in different sizes and they each have their own calculations and T/S parameters. You can’t use the same size enclosure for different size loudspeakers expecting the same sound quality
![TEEDEE TADA - DIAMOND NARAKORN X LEGO LYKN [Special Dance Performance]](http://i.ytimg.com/vi/QgtZedFeumA/mqdefault.jpg)
What's not to love here, double sided sticky tape, soda can aluminium, cheap cordless drill, kitchen stool work benches and a fabulous result. If you don't doff your cap to this young man then life really s a lemon.
Love it... I want to make some for 2" full range desktop speakers!!!!!
The design is NOT MADE by Tech Ingredients,it's an older design named Voight ,patented in 18.05.1936 by Paul G.A.H Voight!
Thank you for kindly correcting me. I'll add this note as a fixed comment in the video.
Yeah I don’t think so. The only thing he designed was the idea of ported speakers. Not the speaker design itself.
Again, Voigt has no "H"
@@AceDeclan it's patented. Look it up...
Ty. Tech ingredients no good
NOTE: as the viewer Atelierul 29 kindly awared me, the speaker design used in this video was not created by Tech Ingredients (card in the video) as I (wrongly) commented in the video. It was made by Paul G.A.H. Voigt on the granted patent: GB447749 (A) ― 1936-05-18.
Tech Ingredients version is clearly using this patent but its not exactly this type of speaker as he modified it with that curved bottom.
In oryginal that space is flat and that is how standing wave inside the speaker is created->height of this speaker inside=>Quarter Wavelength Loudspeaker.
If someone want smaller height with weaker driver but not lose the low frequency he should check => Tapered Wave Tube with Damp-Duct (TWTD) [or ML-Voigt] [or "Sifted Mouth-TQWT"].
But most popular version that is the half height is TQWT where that triangle inside is simply folded once. Because it is then creating rectangle shape it is also boosting slighty the mid-base with the box structure.
Voigt does not have an "H" in his name by the way. The post above also is correct but left off another Voigt Pipe variant that is a folded Voigt pipe that is then reverses so that the "port" is now rear facing. Google the Frugalhorn speaker design. IT is a Tapered Quarter Wave Tube variation. There is a version that has an elegant rear port quasi-horn flair made out of foamcore board as a cheap test bed speaker project that is on the DIYaudio site.
@@sjhorton1184 not sure how well that would work putting out the wave right into the wall, might give a fuller volume but it will be messy. Voigt pipes are meant to be measured based on your room size according to 'real world audio' guy, 2m voigt producing about 22hz and needing a 16m room for a full waveform. 8 for a half wave. Less than a foot to the wall can't be good.
Great job man 👍🏼
Impressive skills. Well done.
Thank you Paul.
Awesome! bet they sound great
Thank you.
did it work?
Hi, unfortunatelly, I couldn't record an audio test in this video. But you can see this speaker working (in comparison with others) in this one: th-cam.com/video/co18T94ozdY/w-d-xo.htmlsi=CXvIGr-iChIVTaSy
How it sounds?
Hi SZA256. I'm really happy with the results of this speaker. I'm not the best audiophile, but for daily use it is awesome.
Hey, how did you figure out the height of the port? I am curious, since that measure is not available on the Tech Ingredients drawings.
Hi, you can find it in the patent: GB447749 (A) ― 1936-05-18.
@@projectcue9150 Thanks! I have seen recommendations on port areas between 225-300 percent of the driver membrane area (Sd), but it looks to me as if the opening is slightly smaller than that, judging by the pics.
The speaker height should be close to ear height, whatever that is in your room.
For tone you can either go deadwood (mdf, no tonal qualities, so wouldn't really matter only ear height) or you can go instrumental so you hear the woods resonances. People were talking about using piano chords and sizing the panels/bracing to match that sound. Similar to how they brace guitars and double basses etc.
Also avoid tech ingredients, he likes to look smart but misses so many details because he doesn't have any true understanding. Real world audio (French guy) has all the details and understanding you need.. All of them. Real speaker guy.
@@luminousfractal420 "He likes to look smart"? The guy also builds rocket engines, cooks hamburgers with a laser, build an LRAD system, makes graphene, makes hard cider for Halloween....
If this guy had a jigsaw he could be really dangerous!
Looking forward that, but trying to keep it simple.
Does it sound just as good?
I didn't build the bigger version to compare, but the sound of this one is pretty clear and powerful enough to a living room. The sound balance is very, very good.
@@projectcue9150 wow, thanks for the immediate reply. Will surely try to build it.
Good luck. Hopefully the guide provided in my website will help you with the process. If you need any tip, just send a message. I'll try my best to help.
Resonanz from the alu can material.
hello sir..if i build that box sir can i put 4pcs woofer.midrange and tweeter in one box?..ty
Hi. You would, probably, need a bigger box to do this. I do not recommend.
ok..i build bigger box..
Separate the mid and bass, you don't want your sub blowing your midrange out.
Cool 😎
Thank you. Glad you liked it.
no measurements ?? no audio sample ? no commentary on the performance ?
Hi Michail. As I said in the video, you can find all the measures in this link: www.coolusefuleasy.com/passive-speaker that is in the video description. There you will find the measures, bill of materials and tips to build one speaker just like the one that you saw in the video. About the audio samples, unfortunately, I don't have the necessary resources to produce it. But the speakers didn't desappointed me. It sounds really good.
The reason a voigt transmission line is the size it is is so it can create lower frequencies.
Benn whating for this
Nice video..Whats the frequency range?
Thanks. It's a full range speaker (80hz - 20khz).
Second best??? According to who???
What makes it so great??
That's what I'm wanting to know.
& full range only to 80Hz?
Hi @@jesusgavemeaids (curious name), It's according the video that I embased the construction of the speaker (check the card in the video and you will understand). Best regards.
I was waiting for some soundtesting in the end.....
Hi Roy. This was an important point that I missed in this video. But if you take a look in the end of this following video: th-cam.com/video/co18T94ozdY/w-d-xo.html, you will see the sound testing that you were looking fore. Hope you enjoy it.
Can we have a listen?
In the end of this other video of my Chanel you can compare it with another speakers: th-cam.com/video/co18T94ozdY/w-d-xo.htmlsi=g5mJrND1Nft2V_sE
Did you even watch the video from Tech Ingredients. This is not even close to the scientific process he described. Just by scaling it down you ruin the 1/4 wave phase of the design because you need the length to account for the speed of sound. Not to mention the lack of mass and completely eliminating the dampening. Just because it looks like a smaller version doesn't make it one.
Thank you for your comment. It will help me to improve future videos.
@@projectcue9150 on ya for copping this criticism from Brian with a good attitude. 👍
He is right tho....
Learning about the complex world of acoustics is full of mistakes and misunderstandings.
The MOST IMPORTANT PART BY FAR is that you actually have a go tho, and build somthing.
Well done.
Cheers
Thank you Dan. I'm aware that I don't know everything and all criticism are welcomed. This will always makes me improve future videos. Hope you keep watching the channel to see the improvements (Or to send some critics when it is not so good).
Simple math. 1/4 wave length is adjusted due to the smaller size drivers he used here 🤦🏻♂️ Can’t believe the ignorance of some of you here in the comments section. Great job man I’m sure it sounds great. These guys obviously don’t know that speakers aka drivers come in different sizes and their enclosures will be according to their size
Have you asked for permission from Tech Ingredients?
Build something of your own design and then show us how it is done. Looks like you are not a newbie, good luck to you
Hey Tony, take a look in my other videos and you will check my own designs. Thank you for your comment.
You need to introduce a baffle step crossover
Thank you for the advice. I considered that when the speakers were done, but, as they are mounted with its back really close to a wall, it didn't make much difference to make some compensation.
I bet that ally rattles like a fart when you turn it up.
Yeah holding panels together with double sided tape? Is that a klipsh or B&w trick??!
Is not
Hahaha, this one is good joke, the internal wood filling horn space, sure You calculated volume of wood pieces into volume of horn. Did You made any calculation of horn at all? Only good in its video are TB drivers. EDIT: I thought its TB, just realized its aiyima drivers. My mistake.
Hi, I used the measures references of the patent: GB447749 (A) ― 1936-05-18. There you can find a nice work of calculation of the internal volume of the speaker. I tried to compensate the wood filling horn space with thinner walls, but I couldn't do it 100% as I would like to. But, thank you for your comment. It will make me improve the future videos of this channel. I bet you would be amazed with the sound that this speakers make, despite your criticism.
@@projectcue9150 im sorry to inform You, it doesn't work that way, horn way should not be obstructed by any internal bracing it causes turbulance. Calculations for any horn enclosure are very strict for exact driver. Same with filling volume and filling density. Also top hole its not "artistic touch' its there for reason. Thinnering walls will cause You box resonances :) also aluminium with this thickness will resonate. Hope You understand why i criticise You so much. If it fulfills Your sound quality expectations then im happy for You. Hope Your next project will be better. Everyone started somewhere.
The miniature of a Ferrari is not a Ferrari ... Therefore the miniature of a "Second best speaker in the world" is NOT a "Second best speaker in the world" !!!
Oh, you are 100% right. It is just a "smaller version". Unfortunately, I didn't build the bigger one and don't have the tools to compare the sound quality between them. If you could do that for us, that would be brilliant. I would really apreciate to watch it.
Why not just enjoy the video instead. Just because you can comment does not mean you always should
It amazes me how some people can be so dumb while trying to sound smart. You do know that speakers come in different sizes right just like Ferrari come in different models?! Still a Ferrari genius 🤦🏻♂️ He obviously used smaller speakers here this the size of the enclosure is different. He even states that he used the formula to build them.
@@iargueta1220 Someone designed this specific loudspeaker calculating wavelenghts , reflex responses , and many relative distances from holes and loudspeakers . "Rescaling" a loudspeaker totaly ruins the concept and the response behaviour of the prototype .
@@micx2056 I don’t think you understand what that means. The loudspeaker itself is “rescaled” by the fact that it is smaller than the prototype, therefore the enclosure must be rescaled. If he were to put the smaller loudspeakers in the same size enclosure of the prototype, which are much bigger loudspeakers, then that would definitely throw off the sound quality. Manufacturers make speakers in different sizes and they each have their own calculations and T/S parameters. You can’t use the same size enclosure for different size loudspeakers expecting the same sound quality
Los pernos o tornillos, en la,parte de atrás, es una complicación que está de mas