MDF Wood Subwoofer Bluetooth Speaker - Powerful Bass
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- čas přidán 27. 08. 2021
- - Help me reach 1,000,000 Subscribers: / @kingmakespeaker1402
Hello everyone welcome to my channel. "King Make Speaker"
I'm very passionate about creativity, but my budget is limited, so I can't do anything for everyone. Hope everyone will support me so that I have more money to make it more complete.
Thank you very much.
#mdfspeaker #mdfproject #kingmakespeaker
Trading full-time.
If I can do it, you can do it too.
You can refer here: one.exnesstrack.net/a/cneq3igfzi
This cabinet design has traditionally been called an "Acoustic Labyrinth". The idea is that the back radiation from the speaker has to follow a path long enough so that by the time it gets to the opening, it's in phase with the front radiation, half wavelength. Some very good bass response has come from these types of cabinets, but as bass wavelengths are long, the cabinets tend to be big. See the Wiki. My complements on taking this on, but without actually graphing the frequency response, compared to the same driver in sealed, ported, and passive radiator enclosures, it's hard to tell if it's worth the size and effort. These designs were cool back when speakers were designed more for efficiency than solid low end, because most amplifiers put out 75 watts or less, mostly way less. Now we just make the woofer resonance low with heavy cones and huge, heavy voice coils, and hit them with hundreds of watts. It was a whole different equation when these dinosaurs roamed the earth. For those of you saying it should have been a full range driver, I believe this was meant to be a demo of a mono sub-woofer for a 2.1 or 4.1, and I praise the effort, but would love to see graphs. I suspect the miking used for this video is not capable of capturing the abilities of it.
Wow awesome, thought it was just a silly design 😆
Yeah, but wouldn't that just be at the tuned frequency? And anything else frequency wise would be out of phase, since audio wave lengths have a specific Length.
Let alone anything ported will have a "delay" and on top of that, speakers at different frequencies 'played" are not in phase as it is and that's just the raw speaker alone.
It seems that phase will never be perfect or even near that.
But I could be wrong on my thoughts.
@@Whitefox-pc7lp When your drunk no one cares Xd.mines a double.
@@Whitefox-pc7lp Wow, mi cabeza explota a tus respuestas! Entendí el punto y creo coincidir contigo. Reaccioné a la idea de la frecuencia de resonancia y sobre el efecto delay que podria existir. Buen punto amigo! Saludos desde México
Very educational comment. Yes, with all the latest amplifiers and speakers, it will blow anyone off the ground.
Как было в старом советском фильме: За изобретение пять, а по предмету неуд. Про качество звука можно не говорить - просто блютус колонка в мдф корпусе необычной формы, а вот работа сама выполнена отлично, хотя скрутка проводов это нечто.
По крайней мере автор своей цели добивается - ролик имеет кучу просмотров.
Молодец.
А как он рассчитал длину тоннеля под этот дин?
@@user-yl5wc4wh9l никак, наугад скорее всего
@@evgenyevich_80 Да и звук похоже так себе,моё мнение,как по коробке палкой стучать)
Да прикол в том, что на слух никогда не поймешь разницу в парочку децибел. Даже если провода подключить обычные. С учетом того что на фактор звука играет все в комнате где стоят колонки, что впереди что сзади. так что в больше степени это плод бурной слуховой фантазии каждого человека. Каждому свой звук.))
полностью согласен, вместо упарывания кучи материалов в никуда(я уверен что в живую эту хрень слушать невозможно) можно было загуглить формулу по подбору корпуса и ФИ под этот динамик и сделать качественную блютуз колонку с встроенным в нее же контроллером! вот это было бы класс! а так чел просто показал что он может с помощью навороченных станков уничтожить кучу материала
Neat project; having a CNC makes this easier than when I was making this type of enclosure a few decades ago! As a former loudspeaker designer/builder, this type of loudspeaker system more or less trades design calculation complexity for woodworking complexity. The labyrinth length is made to be around 1/4 of the wavelength of the lowest frequency desired. Choosing a decent full-range driver also eliminate crossover design complexity and has other advantages. But it also limits frequency and dynamic range but this may not necessarily be a design requirement depending on your intended use. Nice job!
Thank you
I would've used a *_PAIR_* of *Fostex FF 165 WK.*
As an audiophile I'm amazed at this project.
As a woodworker I *cringed* every time he used glue like a preschooler.
Audiophiles are amazed with a 50 000 $ cable.
@@18CC lol... Thats true too
@@serfillustrated4018 yeah, amazed other audiophiles pay 5 times my cars worth (after sound sysyem) ona single cable
@@serfillustrated4018although tbf i should point out my sound system needs sub and amp to be complete, so i should calculate my car as another grand, not including alternator upgrade
come on michael, glue is like cake icing... you can never have too much! LMAO ;)
This dude was like: "I wan't this port to resonate at 5Hz and nobody gonna stop me."
lmao. trying to make a humpback whale call up in here
1/4 wave Transmission Line, not a bass reflex ''Port'' - two different worlds. 1/4 wave at 30Hz is ~112'.
@@JAFO. Ask my neighbors how they know this...
Nice cabinet and i'd like to be able to hear the bass but the carpenter in me began to twitch when I noticed during glue up you would glue, clamp and then fire wire brads into the material but pull the clamps. Plus you made so much more work for yourself by not cleaning up the excess glue.
The clamps are used for a reason; apply even pressure and basically turn the multiple pieces into one homogenous unit. The glue is also stronger than the wood and should be treated as such.
Nice build though!
Thank you
@@kingmakespeaker1402 A video about how to use an excellent machine to flush a bunch of excellent material into the toilet and kill a lot of time in vain... is the length of the tunnel taken from the ceiling ? What is the resonant frequency of the diffuser?
Вот так значить, колонки делают!))))) Нет смысла считать обьем корпуса, длину фазоинвертора...... просто фрезеровочный станок, динамик и ....готово! Здорово что придумал такую конфигурацию фазоинвертора и так заботливо все склеил.....
Весь секрет в клее 🤓
@@user-ye1nw8ub2h нет, весь секрет быть одному в комнате в маске!😆
Да, расчёты для слабаков! Настоящие пацаны делают всё чтоб было красиво!
Монозвук, расчётов не треба 🤣🤣🤣
Звук ведерный.
Toby Speakers had that design in 1969-70. But it was expensive, possibly due to the fancy solid woods used. I don't know how many they sold, but the factory was near my home and it wasn't there very long. My buddy refused to consider buying them, as did I suppose many people. He in particulzr was leery of buying a tall cabinet with nothing visible other than a small 5" speaker - and a lot of wood. It hardly mattered how it sounded, it was the principle, misunderstood perhaps, that did not make sense to some people at a time when Klipschhorns and Heresy speakers were the dream systems. Oddly, it hardly mattered to anyone that the big Klipsch speakers were designed for a mono world of vinyl...
IMF a manufacturer from Philadelphia, PA also made speakers using these types of enclosures back in the 1970s.
Дружище , винил бывал и СТЕРЕО ✌
Great job. You can use a small, short nap paint roller to apply glue faster, thinner and easier on projects like this. Less squeeze out means less cleanup!
Thank very much
Came to say this.
When soldering wires together cut them staggered by that I mean about an inch apart that way when you put the tape around them if the tape ever comes off the two wires won't short out. Just a useful tip 🙂
All the technology to cut the wood and no heat shrink on the connections... I think we might have an audiophile engineer...
@@darrentylor5473 Exactly what I was thinking and use spade connectors on the speaker.
or use a bit longer cable in the first place and not join the cables at all
100 years of speaker and sound improvements; dedicated speakers for each range, stereo, 7.1 surround sound etc . But what do people want now? A single full range mono speaker with giant bass. *Facepalm*.
Thank you
I believe this -->🤦🏼♂️ is what you were looking for?
- Still, nothing beats a true 2-channel stereo, class A amp & tube preamp behind an analog TurnTable sporting a Moving oil cartridge on a clean LP for that open liquid sound stage, presence and realism.
So few people have ever experienced it and even fewer anymore. Seems all the wonders of ages past are lost on the compressed virtual cell phone world of today.
So sad.
@@JAFO. cant beat the right surround sound home theatre setup in my books
@@JAFO. Top statement
I do not. But i do appreciate fact that I can listen to reasonable quality music on Build site and still have bass when being able to take unit by hand on scaffolding 3 stores higher and stuff like this. In car or in home I have different priorities. But still realistic well shaking bass is highly praised
I would stack the boards on pins and mill the inside and outside contour in one process. If you put the pins into critical areas it will stabilize against bending. So you don’t need to leave material which you have to remove afterwards. After milling you can stack everything together on long bolts with threat holes on the ends to screw it together. The finishing process is much less in that way.
All you need to do is to drill the pattern of pin holes into the boards. Use one board as gage on wich you place a board to mill the whole contour inside and outside at ones. Use some screws to fix the board to mill on the lower to avoid the board to get liftet up.ore use threat bolts and fix it with nuts and washers..
Rout very thin panels. Glue and screw and done. Built a couple of horns that way. There is better.
Screws and bolts don't sound good...
What is a threat hole?
I was thinking the same, “why didn’t he add pins, he wouldn’t need to shave off as much”
Man, drilling some alignment holes for dowels would have saved a lot of time.
yup, cut them out with that dang cnc
There were a lot of things he could've done to make things less complicated and messy with a cnc available.
As with all ported enclosures, put a high pass filter on the amp. Set it to resonant frequency. Anything below resonance is out of phase and you get massive excursion for no sound. This way you get no excursion at resonance and you can literally put a thumping amount of power into the speaker.
I've done this with my DJ subwoofers. You can usually get away with going a little bit below tuning though, as tuning is an excursion minima.
very clean! In college I made large frame electrostatic loudspeakers with transmission line woofer cabinets. Designed to 1/4 wavelength of free air resonance of the woofers. I beloieve the line length was around 11', with the woofers being 12". I used passive hand wound 6db/octave crossovers. Massive cabinets for the sound output. Clean. Yours appears to be a very similar design. I really like how you created the main chamber so that it was't uniform. It has been a very long time since I have read up on the subject, my design was based on the loudspeaker design cookbook and the electrostatic loudspeaker design cookbook. In that literature, the transmission line continuously changes size along its length so to lessen standing waveforms. I also used stuffing of polyfil. Changing the density of polyfil packing significantly changed the output of the line, using too little made it boomy, too much and it sounded like the system Q went to critical dampning. I think your design is really cool and seeing it brings back memories of mine. Congrats on an awesome project and I bet that if you continue on you path you could make systems that audiophiles dream about.
Oh my, what a blast from the past! It reminds me of the days I used to roam our local library, reading the most random of things from Abnormal Psychology to WW2 Tanks! one of the books I found was a hundred or so pages worth of speaker and cabinet design theory. Acoustic Labyrinths stuck with me because the name and designs were so cool to me! Nice work!
Trabalho incrível parabéns
Oi Ana!
Oh man, this has been in my watch later playlist since it got released, and I'm really glad I have the time to watch all of it because it's worth it, nice acoustic labyrinth btw! Pretty nice, I've learned a lot from here👍✨ we do need the graphs though :)
I was moved to learn that there is a speaker that has been made with so much love and craftsmanship.
Thanks for sharing this. I learned a lot watching you work on this, like when you pre-soldered the electronics and pre-drilled some screw holes with two different sizes of drill bits. The acoustic labyrinth you created is impressive. I have seen some simpler ones that were made differently by taking boards that were full length minus the gap where the sound flows. The idea of making slices and gluing them together is interesting. The minor signal delay in the sound seems to create more dimensionality in the room, especially if you have two of them that have a slightly different labyrinth or if the stereo speakers have a low end that overlaps the range of the sub you made. I do wonder if its effect on different kinds of music is a little unpredictable, though. I would be curious how it would work for my favorite kind of music, which is ambient minimalism, where there are a very wide and full "pad" sounds. My sense is that it would deeply enrich the experience and make it feel more 3D.
'Pre Drilling with 2 sizes of Drill Bits". Yes! I'm happy to know I'm not the only one who notices such things hehe.
So a pet peeve of mine is when people just drill a hole for a Pilot Hole but they completely forget that one other step of Through Holing. That's what you were seeing here when you noticed the 2 different sized drill bit drilling.
Through hole and, Pilot hole. The proper way.
holy glue bro... lol grab a roller tray and a small glue roller. Save the mess and cleanup. I just use LePage cabinet glue for everything... and way less.
This so much!
Что можно сказать?! У автора есть не плохой набор станков и инструментов, делает аккуратно. Гораздо интереснее посмотреть тесты данной колонки, стоило ли это все делать вообще!!
@@Suleyman_TV, 😂😂😂
@@Suleyman_TV Сделал похожую колонку но маленькую, звучание лучше не стало. Но нижнее отверстие идеально подходило по телефону, вставил телефон и его звук стал и громче и лучше раза в 2. Теперь работает колонка как усилитель для телефона)
Динамик не очень, усилок D class. Испортить можно всё ! Причесать коробочку до красивого изделия тоже не просто. А вот руки и оборудование в норме!
@@Suleyman_TV
Есть формулы для расчёта такого оформления. Тут явно никакими, даже примитивными, расчётами и не пахнет. Длина волновода слишком большая. Автор видимо действовал по принципу: "кашу маслом не испортишь")))
делает аккуратно??? Вы шутите??? И не нужно говорить, что я от "самоделкина" требую как от профессионала. Если у чела в парке оборудования имеется чпу станок, то довести до ума финишную отделку он был просто ОБЯЗАН, хотя-бы после шпаклевки-грунтовки из баллона облить краской! Про расчеты-звук уже написано чуть не в каждом комменте, об этом даже не буду.... 20.000 лайков со всей планеты Земля лишь подчеркивают приближение вселенской катастрофы...
Sweet build! I did something similar for a shop display. However, I use acrylic on the ends and speaker mount point. Then instead of so much glue. I used all-thread bolts to sandwich the material. It looked very industrial. Some led strips lit up the acrylic.
Thank
@@kingmakespeaker1402 Welc
Great design. Back in the mid 70's I owned some lowther speakers that used a similar technology, this is amazing.
O efeito pratico desde duto de ar tão louco é matar o bass.
Try registration pins in the next design. Dowels that would pass through the thickness of all layers and align them and also add strength to the long unsupported ends of the labyrinth.
Thank you
You could really control the squeeze out on that glue better if you used a brush or roller to apply it in a thinner layer.
Also, the hole in the speaker tabs is for you to feed the wire through and fold it over before you solder it. Makes a stronger connection. And when you solder bare wire together you should twist it first. That makes a cleaner connection introducing less "noise" in your electrical pathway.
Other than that, nice job. Keep up the good work.
This drove me nuts
i would not worry about the noise in this case, we're talking microvolts or nanovolts, far outside what matters for audio (especially line-level audio!). the reason you wanna twist the wires is so that they're mechanically connected! some of those solder joints are definitely gonna fail, especially the one that's got a couple mm of just solder between the wire and the speaker tab, around all that vibration...
and the tack soldering onto the PCB pads, if there's no thru-holes to use, you definitely wanna melt the whole connection, you're gonna end up with weird metallurgy on that solder joint with all those partial melts, introducing weak spots. that's tricky when there's multiple wires on a single pad, but you can twist them together first so that you don't have to worry about controlling multiple wires at once.
The candle test is golden!
Thank you
You can probably get similarly impressive bass from a much simpler vented cabinet, depending on the speaker. Still, folded TLs/backloaded horns are a labor of love, fun to engineer and they do sound excellent.
No bass reflex sound as good as Infinite acoustic suspension, less sensitivity , but much better accuracy and impact.
Que qualidade de projeto 👍
Молодец класс респект парню спец в своём деле. Счастья вам удачи мира добра достатка.
Ah, the birthday candle test. LEGIT.
столько работы а звук как с бочки)
На каком калькуляторе параметры рассчитывались ?
Цифровой усилитель и фазоинвертор сделан похоже от балды, сколько влезло.
@@MagElan68 , я так думаю, что чувак тупо скопировал откуда-то всю геометрию. ;)
I love it when I see someone who goes to great lengths to manufacture something with high quality and a high degree of meticulousness and quality. Which was absolutely not the case here... As my mother always said: "Hurry is the enemy of perfection". Better luck next time!
Thank you
That is so cool! It looks exactly like a miniature of an old McDonald's garbage can, the ones inside of course. You put your tray and hand in the hole up top, turn the tray over to dump it, take it out on place the tray on top. It was a brilliant design, I can see why you picked that as the design you wanted to emulate. I have also looked at some garbage cans and thought they would make great speakers but you have gone beyond! So many hours of work, so much breathing formaldehyde, you can go ahead and unask be proud of the gar... speaker you created!
One of the best examples of the excess of form over content I have ever seen...
imagine with a polished acrylic side panel to show case the beautiful design
Imagine made out of acrylic
Unfortunately that would negatively affect the sound quality unless you used a sheet of acrylic thick enough to mimic the stiffness of the MDF he used. Would look totally badass, though.
15:40 Phew! For a moment I thought he wouldn't seal the air duct. 😌
Gave me anxiety for a moment
It's a lossy mistake not to permanently glue the side on. Simply screwed and sealed will still allow vibration and subtle flex causing some loss.
If you make more if these, I would suggest adding dowel pin holes to facilitate alignment. The holes should be in pairs; one hole in each pair to align the first two sheets, then the other hole for the next sheet, then back to the first hole, alternating using pins that are just under two sheet thicknesses long.
Did one of these builds a couple years ago for a smaller " theater " room. Guy didn't want surround so I decided to finally give the labyrinth style a try.
It sounded so good with just a mediocre receiver, I ended up building a set for myself as well.
was it good?
О таких технологиях мы и не могли мечтать, но музыка! ПОЛНОЕ СОВРЕМЕННОЕ ФУФЛО!
🙃Building such a bass without a mask would never be possible !!! Thanks for that !!! 🙃
There may be people all over the world, some with Covert19, listening to that same stream!! 😲
They are all Bassbuilder ???
@@uschdenkfurnenfreund4210 Without the mask he could catch something from that worldwide music stream!
Neat! My hamster would love this!
Now that a sheet of MDF is like $98 at Home depot, Id say this guys like $1000 into the project including electronics and labor already
Reminds me of a TLS design featured in Wireless World back in the early 70's using KEF drivers and Dr Baileys Long Haired Sheeps Wool. A 9 foot labyrinth in a 3 foot case. Not as intricate as this but the bass was amazing.
Yes. Dr. Bailey used the flat KEF B139 woofer, B110 bass/mid, and T27 tweeter. He provided the basic formula, which is much more simple than designing a bass reflex, bandpass, or even an acoustic suspension enclosure. The 9ft. length is good to around 30Hz.
@@fredjoel8113 I well remember making a pair of these, weighing out the wool, teasing it out to get the correct density and then then threading it though the plastic mesh, sealing all the joints with a flexible mastic.
I further remember being disappointed in the result, until I heard a double bass come in on a jazz number I used for testing.
These were partnered with a Cambridge amp, a Garrard 401 with SME arm and a Shure v15 cartridge. The best system I have ever had, good days.
Those were the days!
I believe I still have a copy of Dr. Bailey's article somewhere.
This construction has nothing to do with the transmission line principle..
It is really a big effort, nevertheless with only a bit of sence of sound engineering..
Yes, a masterwork of compactness, a very sturdy and solid box that dampens its own side vibrations, but fails to "guide" the air pressure consequently,
not to mension the inadequate phase reverse polarisation of the sound transmission.
Let me remind you all, that just as a saxophone tube goes from a wide opening end to a very narrow one, in our mouth,
the same way must the long chamber tunnel on the back of the woofer, handle the air pressure in the box : with sophisticated inclined appartments, no parallel sides at all, nor any return tunnels, and mostly significant, there has to be an accurate overall length of the whole "air travel" distance, for the correct phase return to take place.
The quarter or the wavelenght of the "cut off" frequency of the speaker....as a mass.
Allthought this construction could add some deep frequencies to the music, it could merely do nothing to contribute for hifi and tone precision..
With some significant changes though, having such a beautiful cutting maschine, and such a craftmanship, you can make very good speakers that realy sound fantastic...
The electronics compared with the whole project, are a joke too...
By the way,, I dont mean to be arrogant, I am an engineer myself and i have costructed many different boxes by Linn Akustiks. It just took me by surprise, to see such a good work with such a distinct failure...
After all the good woodworking you use skinny wiring and then top it off with insulating connections with electrical tape. The plasticizer in the wiring insulation that keeps It flexible is also a solvent for the adhesive of the tape, so ick, ick, ick!
no cuida los detalles, lo que hace bien, es por que lo hace la maquinaria, el solo ensambla y lo hace mal
Agree heat shrink would have been better and adds some physical strength to the connection. Better yet, just use longer wires...
This is an absolute work of art. Congrats dude💥
My understanding is that it's the only type of enclosure where the deepest note can actually be deeper than the resonance of the speaker without sounding bad or damaging the suspension of the speaker. with regular ported speakers, the aim is to make the cabinet resonance higher than the speaker resonance so there is not a huge peak is sound at the resonance frequency. Nice design.
Thank. I love you
Пройдя через такой кишечник, звуки, должно быть, обретают неповторимую окаску =)
You made the idea perfectly... 🤣🤣🤣
да, это четверть волновик, и он лучше играет чем фи и зя.
@@alexshvez1259 с такой длинной?))) лучше чем зя серьёзно? смешно смешно)
@@user-nm4ko6rx5w ну ты хоть один слушал? И каких размеров должен быть зя? И какой КПД у того зя?
@@alexshvez1259 а какой у этгого кпд?) я бы посмотрел как бы ты замерил кпд))) слушл всё и собираю сам
Great build. But it is just for fun. You can reach the same or better bass response on a smaller volume with classic port/radiator or even closed box. Depends on TS parameters.
Thank you
The new mdf cabinet. Pressure waves travel a mile before hitting your eardrums
Its a transmission line loaded sub enclosure. There are actual measurable lengths to any frequency. 40,50,60hz pulses have a length. By giving the sub an overly long port to resonate through, you've accomplished several things not necessarily heard by the naked ear. T/S parameters for a sub are of great importance if you want the complete capability of the sub to be used as an advantage.
Kawal dobrej roboty. Robi wrażenie dokladnosc wykonania 👍
Thank you
Dude, just apply the glue thinner and wipe the excess off as you go - just saying 🤔
Or use a gloss roller
It's always fun to see a stacked wall enclosure being fab'd. I prefer my Dual High-Q Complimentary Asymmetrical Triple-compression Folded 1/4 wave Octave-stacked Labyrinths.
я сделал открытие в детстве. усидчивость (серьёзное отношение к делу для выполнения длительной кропотливой работы) прямо пропорциональна надежности уверенности получения гарантированно высокой прибыли (успеха дела) от выполяемого мероприятия. за всю жизнь такое было лишь однажды и то не очень то рентабельно относительно труда но успешно относительно всей остальной жизни. тогда я смог выехать из страны на 10 дней. это всё в моей истории. надеюсь я дал хороший повод посмеяться над устройством жизни в нашей стране
Nicely done. One thing - I'd use heat shrink tubing instead of tape, especially with lipos that can get you lot's of fireworks when shorted. Which program did you use to calculate phase shifts and housing dimensions?
Same thing I was gonna suggest.
ditto, only thing I i would for sure say I would do differently
I think he just went to town and drew up as many curves as he could fit in that box
Great wood working but the soldering can be drastically improved. Needs a mechanical connection as well none was used.
I would have also used crimp connectors for the speaker, so it could be replaced I'd necessary. I would have also used a recessed topper for the board so it could be adjusted and possibly considered an 18650 battery holder with balance board for proper charging (Allowing for larger capacity. That bottom has a LOT of wasted space.
The first duty of an enclosure for the speaker is to make it look big inside and small outside. So you don't want much material inside. You want the speaker close to the center of the volume. A horn as resonances, so we don't go the full length, but still we want the speaker slightly recessed in the center of a large face.
To keep our DSP equalizer lag low, we don't really go to the exact center of volume and face. We don't want sound from inside to escape through our walls (there the material goes, sphere is best), but through our bass reflex tube. Bass reflex is only a minor touch to the low end. It is always small compared to everything else. "Small" also helps to block high frequency. So a thin tube with smooth walls wound around the corners of the box is ideal.
This is not a ''Port'' - it's a 1/4 wave Transmission Line.
@@JAFO. velocity of sound already comes into play from the membrane to the walls of the enclosing. So with a large "box" and a part on the far side / back side and a small speaker, you may already have 1/4 without any "line". At least the line should start on the far side. If the hole and the speaker would be next to each other, 1/4 would at least be the same for the whole audience. If the goal is to avoid a digital DSP, one has to use an ideal shape like a cone ( wound in a spiral or helix ). Then you could cut of the tip and have bass reflex.
@@ArneChristianRosenfeldt Don't forget the Q response of the T-Line mass at resonance is immediate
@@JAFO. Bass reflex is not supposed to resonate. You send the inverted signal from the back delayed to the ear. Mathematical this corresponds to two delta functions in time and a sine in frequency domain.
With impedance mismatch at the end of the reflex tubes there will be a resonance which is sharper than a sine, but we don’t like it. We like a more flat response. This is no organ
With multiple tubes we could produce a Fourier Series and design the frequency response over the whole low end and mid range. Then the MDF damping effect might be high enough for the frequencies above.
For independence and impedance match I wonder if the case could consist of 16 horns pointing to the back of the speaker. With a 3d printer they could be attached to a binary tree with a root in a front horn on the outside.
To make it look big inside, you can actually ADD material in the cavity, just a different material... :) I always pack my sealed enclosures with loose feathers, pillow foam in small chunks, rockwool, or fiberglass insulation. It makes the inside "look bigger" by damping the standing waves inside the enclosure. A 95% packed enclosure with high density fiberglass insulation will act around 25% bigger than the real volume.
Well done. Doing the rough math of your design, it looks like it will work pretty good. Will look nice in a room as well.
Thank you
At 4:57 in, if it had been me running that sander those wires would have been history.
Hello you
@@kingmakespeaker1402 that speaker build was very impressive. Building up the dimension like that is not easy. Nicely done.
Beautiful creation 👍
A tip if i may, when you have to glue several pieces like that, i sprinkle some regular table salt on the glue so when you clamp it, it doesn’t want to slide around.
Hi you. I love you
Show! Parabens, com certeza eu adoraria ter uma igual a essa!!
The good thing about this woofer is that it's so massively reinforced by its very structure that its enclosure should be perfectly inert. On the other hand: A whole lot of work needs to be put in to make a fairly large enclosure with an itty bitty teeny tiny woofer, giving an end result that should easily be surpassed by a similarly sized closed enclosure with an 8-10" woofer, and the proper use of EQ. As a proof of concept it's interesting, and it demonstrates how intricate structures can be manufactured layer by layer instead of folding anything.
Yeah but for a portable speaker driving that 8" or 10" properly will take massive amount more energy which goes against design considerations for battery operated speakers.
Muito bom 🇧🇷🇧🇷very good
To make the glue up easier, you could have added a few extra tabs on the sides of the CNC cut pieces with holes in. Then you could add put a piece of tight fitting bar or dowel through all the holes to line them up. Then just cut the tabs off after.
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Damn, all this time Ive been missing out on such a profitable way to make money.
Хотелось бы увидеть график групповой задержки.
you know that your speaker is missing all over the interior foam board and felt this helps the sound come out clear and high fidelity
Thank you
I always used MDF board on every high end Speaker i used for my pick up Stereo double cross over & Hifi 3 way speaker with a highest wattage of 2 to 3 grand Rockford Fosgate or Alpine best speakers they are awesome with crystal sound with no vibration like the plywood & a remote control Pioneer stereo connected to the highest power Amp. & maintain a 12 gauge heavy duty capacitor converting it to 110 volts
Wow! I'm gonna run out t' the garage and program this into my CNC right now!
besides your good woodworking skills, I highly advise to check theory of transmissionline building.
At least you should consider filling the soundchannel with insulation material and I have my doubts that the compression chamber is adjusted to the speakers properties. I would also consider using a crossover to avoid unwanted resonances
Thank you
Can you explain that like I'm 5 years old & dumb?
Yeah, there ya go! Always try to incorporate a phase destroying crossover in a phase-coherent single-driver T-Line. 🙄
Observation: That thing is hilarious. It has likes from clueless people.
Thank you
We have this gigantic ass case and an labyrinth of bass reflex and yet only one little speaker. Put atleast the biggest speaker possible inside. Beside that really good work indeed.
Hello you
form of the ages those vertical drives where out of this world yo
Mad Props for all the work you put into this. Would you consider separate speakers instead of forcing one to reproduce all of the frequencies. Even just a separate tweeter resonating the high frequencies would let your lower woofer be much cleaner and tighter.
Thank you
It's a phase-coherent single driver *_full range_* with increased low frequency efficiency. Adding a passive crossover would introduce phase distortion and ruin the sound stage & presence if a stereo pair were utilized - unless the crossover was done in the digital domain for a lot more $$.
- Allowing high frequency reproduction through a single driver designed for full-range use won't affect bass reproduction.
@@JAFO. ili5 plz
@@110jmartin011 "I/Elucidate/Explain like I'm 5"? ELI5 - OK, No Problem;
- it's going to have an uncanny *_live stage-presence effect_* due to utilizing a single driver (speaker) on each side - which remains *_"phase-pure"_* so all frequencies arrive to (and hopefully also perfectly, simultaneously emanate from) the speaker without causing any phase shift - something common when the wattage goes through a crossover network to filter highs, mids & lows and send them out to the appropriate drivers in a 2-way, 3-way, 4-way (or more) speaker system - like what you see in exactly 99.723547% of speakers on the market. 😉 ...exactly! 😎
These esoteric single-driver speakers may not provide *_"Slammin' Bass!"_* or _"Sizzling Highs"_ but the effect of near perfect phase on the listening experience results in a shockingly real listening experience in terms of closing your eyes and realizing that your imagination is running rampant with picturing actual people playing actual wood &/or metal instruments in the room *_WITH_* you.
It's hard to imagine until you actually experience it, but for the nearest thing without exceeding $400 - $500,
- locate an old 1970s Sherwood 7200-ish receiver in good original working condition,
- an Adcom GCD-575 CD player
- and a pair of Bose monitor 100s or 101s
and set it up so you're exactly between the speakers making a nice equilateral triangle with you as the 3rd point
*(outdoors if possible!)*
and play something like a CD of *_JAZZ AT THE PAWNSHOP_* or some other well produced album - hopefully only using 2 microphones for true *_In-The-Room_* stereo recording/playback effect.
You might want to up your health insurance coverage first because there's a high likelihood that you'll find yourself going to the moon. 🤩
@@110jmartin011 Oh sorry, I thought I was replying to a different video showing a stereo pair of full-range drivers in stereo. It pays to make certain which video comment one's responding to, lol 😣
If you offset the black/red wires, it's easier to keep them from shorting, looks better, and less tape. Which is to say, make one, either the black or red longer on the speaker side, and do the opposite on the other side. Those Wuzhi audio amp boards are damn impressive. I got one driving two 4" speakers and a huge 10", and it fills my garage with music!
Thank you
I have the 36VDC 540 watt Wuzhi card in a cigar box driving 2 bigger-than-bookshelf SONY speakers with 2 midrange drivers and a horn tweeter in each, and a 10" downfiring subwoofer... It will BLOW THA ROOF OFF...
No 😦 , 4th order still solve. Nice work and congratulations 👍🏻
So it's like a DIY wave guide? Very cool.
Thank you
this is gonna take me ages with my fret saw
Thank you
Going to be quicker than some I have seen trying to use a saw 👀
Is there a reason why you didn’t go for 2 way (even 3 way) speakers set up to especially isolate high frequency sound with separate twitters?
SUB?
It could be made into a 2 or 3 way...
It's supposed to be a sub basswoofer.
@@bobshifimods7302 No, a full-range with stout bass - for it's size.
If you are designing a subwoofer box, try testing it using music with subwoofer frequencies, don't just use music in the lower middle frequencies
What a great project, I like it! 😁👌🏻
Though I can't appreciate the audio that much due to my phone's speaker limitation.
I don't know who called these labyrinth, this is called "transmission line" by anyone who is in the industry in my personal experience and building these is a phase every audiophile goes through until they finally understand that it's not worth compromising the size, weight and the excess material. It also takes a considerable amount of calculation and tuning since the volumetric space is at the bottom level for woofer to compress, tolerance margins are too small.
Tech ingredients built some decent transmission line speakers but they are like obelisks.
Man….. your soo lucky to have a cnc cutter that’s got to be soo gratifying to just layer them together and do the finishing.! That’s some transmission line tho lol… must sound smooth and quiet. You think a pair of full range two way 5 1/4 speakers would tie it all up?
Thank you
Умпа! Умпа! Соседи не нарадуются!
O wow da bin Ich aber begeistert und das will was heißen da Ich vom Fach bin. Dieser Subwoofer Bluetooth Speaker ist eine Meisterhafte Arbeit👍👍👍👍👍👍
Thank you
Amazing work! Can you tell me, what was the cnc bit you were using and the feed/speed for the cuts? I usually cut 3/4" mdf with a 1/4" 2 flute spiral upcut, but have to make 2-3 passes and keep a vacuum handy to get dust out while it's cutting. You were cutting so clean on 1 pass!
Thank you
Отличная работа, еще бы из канадского кедра сделать!
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I have 2 suggestions. Wipe the glue away while it is still wet. And glue 3 or 4 panels together before routing them out. Just keep stepping the milling down. Maybe one final full depth pass for surfacing 0.010" or 0.020" this will keep assy and clean up easy. Only 2 or 3 multi layered panels needed.
curious to what the wave series actually looks like when it comes out, resonators have always had a problem by design due to the wave length and volume required in the c2 c3 register to amplify the sound. Pumping pure wave into it and recording the result through a sound analysis program would be cool to see.
A tremendous amount of work has been done, but the phase characteristics of such long mazes are very poor. My experience and numerous experiments confirm that the best balance of phase and amplitude characteristics is achieved in cabinets with an acoustic resistance panel and direct radiation speakers with full range.
😂
Correct
With that speaker (5 inches) a reflex box would have been more effective. Less work and perhaps more satisfaction.
In my experience, having built such speaker designs, simple reflex models usually have better sound. So I guess you are right.
@@bobshifimods7302 Yes, in the transmission lines there is a good result with low resonance frequency, high Qms and long excursion in the low-frequency working zone of the cone, because you have to move a lot of air; this lowers the radiation impedance at low frequencies. The transmission line used for speakers like the one in this video can't offer much, even calculating it exactly at 1/4 wave Fs. But even so you have fun... 😁
use an applicator brush when gluing...it spreads the glue on the entire glue surface and also keeps you from having too much excess and waste. You will have good results. :)
Thank
@@kingmakespeaker1402 Or a small paint roller.
You can use this on your birthday to blow candles. 😁😁😁
As the seconds went by i could sense the hate that was going to be unleased at this 1 year old video. Some of you really need to seek therapy. KMS you did a fantastic job. I wish I could hear it in person. Beautiful work.
what's the time delay on that length of port? you probably get two bass notes for every bass note :P
Looks like about a 3 wave
No. It acts like a deccelerator for speaker cone
@@amanthatthinks это бред полнейший!!!!
у аудио -филов уже инфаркт случился))) свечки в конце порадовали)))
Thank you
After all that precision, I can’t believe you soldered the wires together! Crimp on connectors would have been more elegant.
I like the Transmission Line cabinetry . A lot of work trying to get a midrange driver to sound like a woofer. I don't think your driver will last that long as using that driver the low frequencies will cause it to travel too much and it will give up the ghost fairly quickly. Try making the cabinet 3 times the size and put in a quality full range driver, then you will really have something. I have been using Transmission Lines for the past 35 years and done correctly with the cabinet properly tuned can give amazing bass response. I wouldn't think at that size your bass would go below 50hz.