Remember the music demos are recorded sped up x6, then slowed down in editing - in real life it sounds like beebooobebebeeee 😂 irl speed is briefly shown at 12:10. No extra EQ or boost is added, the mic on my phone used to record slowmo naturally distorts like mad with 200hz at 140db lol. The camera shake is real as well since my phone usually rests on the roof or the seats a bit and it vibrates. 😎
I've been designing them exclusively for nearly 35 years czcams.com/video/3qjWKUBvSNA/video.html czcams.com/video/-96WAVQdcyQ/video.html I think they're the easiest enclosures to design.
I love T-lines! Especially full round tube versions with almost absent standing waves. And a series tubed T-line with a small front chamber for high frequency boost for solid upper kick drums. 🥰
Some time ago I built some T line main speakers each having two eights and you don’t need a subwoofer to help them. But I am a bass head so subwoofers are always used
Last time I commented I'd like to see a T-line, now there's a T-line. I'm addicted to these series. I expected the T-line to do well because in cabins like the test one, it's easy to use the quarter wave theory to get great output. Very nice!
I have a full scale wicked one. 3rd one I've built. That's why we submitted it. My good friend told me we should submit it for this competition. It is not our design but we just had to share it because it does so well compared to other enclosures. I will say the full wicked one is a huge box so it's better suited to an SUV or truck.
@J-Lane yeah I was 2 second from making a dual 8 for my suv but I have 6th order that been on the shelf for a long time that I decided to get working on it first
Build it you will enjoy it. Very musical and loud. The parameters for these series are very specific. Power, size of vessel, and frequency response testing. If you want lows at the sacrifice of other freqs. Then recommend a different design.
It's a "Bass Whistle". Basically a 1/4 resonator tuned to the frequency you want to get a peak at. The length of the path determines the resonance frequency, and the size of the enclosure determines how much gain you get at that frequency (larger enclosure = more gain). They work well. Their "achilles heel" is that first harmonic resonance that shows up at 3*Fb, and you can see that here in this video (it shows up at 600 Hz). More advanced TL design involves various tricks to deal with that first order resonance, including offsetting the driver down the line a bit (usually about 1/3rd of the way) to null it out. A few dB of overall output can be lost in the process however, so whether or not you should do it is basically down to what you're trying to accomplish with your design.
Nice. I built a t line once using an mtx9500. That thing was frickin loud. Not the best sounding box i ever built. Had a little to much roll off. But it was in the trunk so not to bad. I think i still have the rf1692 6x9 i had in back deck. I gave the t line and sub to my son years later. He's still got it in his mustang. It's still impressive all these years later. I still have the rf500a.2 that I ran it on. As I've gotten older I've seem to like deeper bass. I tune most of my boxes 30hz and below now. Throw some 10hz on and get a nice back massage. I really don't care about being to load anymore. Just low deep clear shaking bass with very crisp highs.
I have a t line dual 12 in my hatchback. I’ve done different types of ported and sealed boxes the t line is my favorite it seems to do the best across lots of different music styles.
BUILDING A TLINE FOR 1 18 in the trunk of my Buick!!! Been watching you since the 2 pioneers in the yellow hatch man, your a lowkey legend to me! SHOUTOUT FROM TEXAS!!
Fun fact. His video explanation of a t line enclosure is how I found his channel. Think I've been subscribed ever since 😂 Really enjoying this series 👍
TL sounds best on music. I have 2 15's in a quarter wave tuned at 27 and it plays from 20 to 55 very linear. The bass is very full and warm. Also with much lower power needed. Hope this summer to make it to 4 15's in a t-line if i have the time to build the box.
@@numlockkilla Why would he do that? The advantage of isobaric is the sealed section can be half the size. You end up with the same cone area. There's no real advantage to it in this application.
This series is awesome. I appreciate you starting it so I can learn about different style boxes with excellent data so I can get more knowledge about my passion, car audio. You are by far the most knowledgeable.
I’ve learned more about how ported boxes work at this time of this series than what have in the many many years I’ve been interested in car audio. These video tests puts things to work in a way I can understand better than reading about it. Thank you 🙏🏼✌🏼
It truly is amazing what these little speakers can accomplish. I love my Bluetooth with dual passive radiator I hope you could throw a box design like that in the competition
T line is playing good and clean but these boxes take up lots of volume of car trunk , but would be fine to keep at home and wife would not allow it but t line has to stay
@@nnperformance76 thank you. I did go through a few iterations of this. If I submit another i may tune lower. I was relying on the cabin fq to carry the 25 Hz and it did with the door open.
@@justinjoy593 advice. Remember the specifications of the test. Simple terms it would play way louder if power wasn't limited! Trying to design under the specifications given is very difficult. You did a really good design...
If the T-Line has the same bore dimensions from behind the driver to the opening then it will act like a cylinder with one closed end. In other words it’s acoustically the same as a clarinet, which also only plays every other harmonic. This because instead of a quarter wave it acts like a half wave due to the wave needing to travel the entire distance of the T-line and back before unloading. This a tube with one closed end will play twice as low as the same length tube with two open ends. This only happens if the dimensions are the same all of the way through the tube or t-line.
I have a design that worked very well IRL and would be a nice comparison with this one if you'd like. It's a "horn" but also a transmission line, but also I increased the size of the line behind the speaker to make the enclosure reach down to 24Hz. It is a more regular design that should be able to print well. If you'd like it then I'll get in FreeCAD again and try to figure out how to scale the model again. It's on my channel
Surprised the last turn wasn’t curved.Sometimes loudness perceived by our ears is different from a device. Maybe has to do with the funnel shape of our inner parts of the ears.Just guessing on the last sentence.
Anyone heard of a Labyrinth vented box Is that basically a T-Line box? Bought one off Amazon advertised as an SPL subwoofer box. The port wraps around itself like this but not nearly as long. I always thought it sounded like a mix of sealed (sq) and ported (spl).
hey mate, this gave me an idea, I have a ported W-Bin design but unsure if the driver will mount as a front loaded design? let me know if you think you can mount driver like that and i will scale it send it in!
Wonderful series! I was wondering about voice coil temperature - would a 1/6 scale model predict full scale performance? I'm having some heat issues due to high loading in my designs..
Do you think you could give us exact specs of the "car" Id like to build a replica and test box in it before I submit I know it says 19.68 liters and gives the top and bottom dimensions what about width? This is becoming a fun hobby for me and good learning tool for my kids. Weve done a lot of 3d printing for their school projects and theyre getting into this and seeing the results from the things im printing for it.
how do headphones reach such lows with tiny drivers? would be interesting to 3d print a box that reaches audible 20hz when you have your ear up against it. 3d printed super bass headphones, awesome? i have no idea of how i would design it though
Effectively just cabin gain. The smaller the chamber the more it boosts the low frequency response. Also, since headphones are right next to your ear they don't need to be loud, allowing you to trash efficiency for LF extension
Random thought: TLine as the rear chamber of a series tuned 6th What would that be called and would that make sense? Would it be different as a parallel tuned 6th?
If it's a true t-line it would technically be 5th order. But I've seen a handful of designs that use quarter wave on the front of the driver to boost efficiency and a Helmholtz resonator on the back wave to extend the bass shelf. The Klipsch jubilee does that
1:14 I dont understand how 180cm wave (190Hz) translates to 30Hz due to "scaling". Doesnt sound of speed remain constnant 180cm wave is always gonna be 190Hz no matter how you scale your box?
Think about how the note on a wind instrument gets lower the longer the tube is made. Same situation here. We are scaling every thing by a factor of 6, so to play 190hz we only need 45cm line, as opposed to needing 285cm line for 30hz. Acoustics is just fluid dynamics and scales perfectly, but you have to scale EVERYTHING, frequency, dimensions, volumes, etc. You can't scale down a 30hz tuned subwoofer and expect it to still play 30hz when a 6th of the original size, which is where your speed of sound statement comes in.
If I put a woofer into a long tube, such as one used when working with concrete, and just leave one end open, could I get the same results as a T-line box? Of course the disadvantage would be a extremely long tube, wouldn't fit into a car but would maybe work in a living room?
Interesting, maybe a tube standing up with the sub on the bottom and the open tube near the ceiling. Maybe 6' long unless you have raised ceilings. That might create some good output and not take up much space.
@@JasonWW2000 that's what I was thinking too! I'm mainly just curious, but concrete tubes are cheap... I might have to try it just for the heck of it, it will of course not be a ideal enclosure but I'm just bored and want to try something different:P
That would work.. But if you want to incorporate it into a house, use the spaces between floor joists. Or even wall cavities... A 16" stud spacing with 3.5" studs is suitable for many 10" subs
140db at 200hertz is very loud. It really can hurt your ears if you listen it long. You can listen to bass almost 160db daily with no hearing damage but 1khz at 120db is gonna kill your ears.
loose uncontrolled sound from an open cabinet does no favours for sound quality. Drive units are not tightly controlled been driven in an open cabinet when it is been driven by the amplifier. Distortion gets higher with uncontrolled driver extension while not been able to play cleanly at higher sound levels. There will also be issues with cabinet resonances with a cabinet not treated by appropriate bracing and damping to stop those sound distortion resonances made from the uncontrolled drive unit distortions resulting also in sound distortions and vibration noise coming from of the cabinet .
Loudness is usually associated with amplifier power. So if you test maximum amplifier power at 2 ohm and 3 ohm, you almost always get more power at 2 ohm.
They wouldn't be optimal. Air spring vs radiator mass. By themselves they have thier advantages and disadvantages. However together. Juice not worth the squeeze.
I have a crazy hybrid design. Problem is in order to submit it, it would be showing everyone else a design that could then be copied. My design is so unique I would actually like it patented. But with a series like this; it basically puts people's good designs on display which as stated, may result in someone copying it. So please anyone if you have interest in your intellectual property; patent or substantiate proof for your designs before sending them in. Who knows if one of you guys will come up with something groundbreaking and then someone else grabs that design and makes a profit.
If you wanted to submit it for private testing you're welcome to! There would naturally be a charge, and you would have to trust me to keep the design completely to myself, perhaps I can sign an nda or similar. Would be a good way for you to prove a concept in a controlled testing environment though which would be hard to replicate in full scale ☺
@@barevids I've actually already built a full-scale version and it is currently operating in my living room at the surround sound subwoofer. It is literally the best subwoofer I have ever heard or used in home. I always turn my in-home subwoofers even lower than I would in a car so I have that rumbling bass for movie tracks. And it handles everything Clean. It's only 2- 8" inch subwoofers and it's maybe 100 w total being pushed to them at max volume but with my hybrid design; I have bass that literally rumbles all the way to my third floor in the attic; rumbles my windows; and rumbles my doors to where I had to put thin foam strips in the door frame like you would for an exterior door, in order to keep my door from rattling. And it handles the higher frequencies tight, punchy, and clean as well. I won't go into the details of how but it it has three different frequencies at a ratio harmonic tuning. The harmonic tuning actually increases the output on all Chambers when an individual chamber reaches resonant frequency. I've already done what's known as the poor man's copyright on the design. But would rather wait until I actually go through the proper names for filing a patent before submitting it for testing. I can only go by my math and what I hear with my ears though since I don't have the equipment necessary to test it properly. But I can say that these two little eights on that little of power is actually just as loud to my ear as a 12-inch woofer that I had built for my car once on a 600 w. By-the-way; if I wanted to send the design to you for private testing; what would the charge be.
@@barevids I tried to send you an email so that we can contact privately, but as expected CZcams is weird about that so the comment didn't register. How can I reach you for a private discussion regarding testing.
He was saying that it could take 200 watts at that one particular frequency without over excusion. It had tremendous output with virtually no cone movement. I don't think he was considering all the other factors like the voice coil heating up, etc...
It's the mic not the driver. Most mics struggle with bass really bad because of there size. Think of as a speaker clipping. A very small speaker way over powered.
@@thomasnygard2334 Okay. I'm thinking he should try a different mic. I've seen Bass mic's on Amazon but they were rather expensive. I just looked again and the AKG Pro Audio P2 High-Performance Dynamic Bass Microphone looks like a winner.
I haven't looked at one before. ( low frequency mic) But it might just be to much money for his channel. With that being said. He is probably not broke. But if the channel is run like a business it's a separate thing. ( From his personal finances as well it should) It wouldn't be sweet though.
Bro, this little speaker sounds nowhere near this. Why are you adding so much bass to the recording to make this little speaker sound like it's 2-12" competition subwoofers?. It's barely moving the paper towel hanging. Bass this deep would eat the paper towel. Your also testing the little driver inside of a box like people are going to listen to this speaker with their head inside of a box. Pull the speaker out into the open in the room and test it. You know, actual normal testing peramiters. I can test a pair of earbuds inside of a box and get better readouts.
I dont think you've watched how this series works ☺ the demos are played at x6 speed and slowed down in editing. The distortion heard is literally the microphone on my phone unable to cope with the 140db inside the cabin. There's no bass or gain added at all in post. Happy upload a raw clip from my phone. I don't think anyone's phone would take 200hz at 140db and not distort lol
It's an experiment... and helping a lot of audio enthusiasts in the process. Hope this wasn't ment as a negative comment but just a miss understanding of the experiment/testing requirements.
So, you edited your comment drastically, with new issues - you completely misunderstand this whole series. Go back and watch the pilot episode. This series simulates a car audio environment at a 1:6 scale. Yes, people DO sit inside boxes and listen to speakers, aka vehicle cabin and subwoofer. This is not simulating hifi, home theatre, or anything like that. I guess it pays to understand the content you are criticizing before making yourself look silly.
I guess the whole “scale” thing went over your head along with the testing frequency. Many people start with small driver (normally like a 8”) and experiment with tuning and different enclosures/ size and port volume and when they find something that’s works well they then Scale it up larger and see if the results translate over. This is exactly what this serise is about see which works the best and then scale it up and see if the results are the same. BUT If you can do a better job go ahead and show us how it’s done, we are all waiting
This is the best series on CZcams right now.
Remember the music demos are recorded sped up x6, then slowed down in editing - in real life it sounds like beebooobebebeeee 😂 irl speed is briefly shown at 12:10. No extra EQ or boost is added, the mic on my phone used to record slowmo naturally distorts like mad with 200hz at 140db lol. The camera shake is real as well since my phone usually rests on the roof or the seats a bit and it vibrates. 😎
T-lines are amazing. I have used a hybrid design in many of my projects, with a pressure chamber followed by a long folded port
I've been designing them exclusively for nearly 35 years
czcams.com/video/3qjWKUBvSNA/video.html
czcams.com/video/-96WAVQdcyQ/video.html
I think they're the easiest enclosures to design.
How have they worked for you?
@@riveralley Brilliantly to be honest. Very nice and wide frequency band
@@Skarfar90 is there any decent websites on how to design them???
@@riveralley Not really sure. You could try your luck with Google Sketch-Up to make a 3D model I guess. But I made mine on a whim really
I love T-lines! Especially full round tube versions with almost absent standing waves.
And a series tubed T-line with a small front chamber for high frequency boost for solid upper kick drums. 🥰
T-Lines Are Brutal
Some time ago I built some T line main speakers each having two eights and you don’t need a subwoofer to help them. But I am a bass head so subwoofers are always used
If you like t-lines. Just wait until you get into tapped horns!
Remember those snail formed Bowers and Wilkins speakers back in the day.
@@Skarfar90 Nautilus
Last time I commented I'd like to see a T-line, now there's a T-line. I'm addicted to these series. I expected the T-line to do well because in cabins like the test one, it's easy to use the quarter wave theory to get great output. Very nice!
imagine my surprise when he did a wicked one ....im really hoping to see the full wicked one with all 4 subs. i miss mine i made in highschool
Another good video...I secretly want the wicked one to win so you can build a full-scale one to see how it does.
I have a full scale wicked one. 3rd one I've built. That's why we submitted it. My good friend told me we should submit it for this competition. It is not our design but we just had to share it because it does so well compared to other enclosures. I will say the full wicked one is a huge box so it's better suited to an SUV or truck.
@J-Lane yeah I was 2 second from making a dual 8 for my suv but I have 6th order that been on the shelf for a long time that I decided to get working on it first
Build it you will enjoy it. Very musical and loud. The parameters for these series are very specific. Power, size of vessel, and frequency response testing. If you want lows at the sacrifice of other freqs. Then recommend a different design.
It's a "Bass Whistle". Basically a 1/4 resonator tuned to the frequency you want to get a peak at. The length of the path determines the resonance frequency, and the size of the enclosure determines how much gain you get at that frequency (larger enclosure = more gain). They work well.
Their "achilles heel" is that first harmonic resonance that shows up at 3*Fb, and you can see that here in this video (it shows up at 600 Hz). More advanced TL design involves various tricks to deal with that first order resonance, including offsetting the driver down the line a bit (usually about 1/3rd of the way) to null it out. A few dB of overall output can be lost in the process however, so whether or not you should do it is basically down to what you're trying to accomplish with your design.
I look forward to watching this series more than anything else out there
Nice. I built a t line once using an mtx9500. That thing was frickin loud. Not the best sounding box i ever built. Had a little to much roll off. But it was in the trunk so not to bad. I think i still have the rf1692 6x9 i had in back deck. I gave the t line and sub to my son years later. He's still got it in his mustang. It's still impressive all these years later. I still have the rf500a.2 that I ran it on. As I've gotten older I've seem to like deeper bass. I tune most of my boxes 30hz and below now. Throw some 10hz on and get a nice back massage. I really don't care about being to load anymore. Just low deep clear shaking bass with very crisp highs.
I have a t line dual 12 in my hatchback. I’ve done different types of ported and sealed boxes the t line is my favorite it seems to do the best across lots of different music styles.
BUILDING A TLINE FOR 1 18 in the trunk of my Buick!!! Been watching you since the 2 pioneers in the yellow hatch man, your a lowkey legend to me! SHOUTOUT FROM TEXAS!!
I hope that's a Buick SUV and not a car! Lol That's gonna one big box!
Fun fact. His video explanation of a t line enclosure is how I found his channel. Think I've been subscribed ever since 😂 Really enjoying this series 👍
I have seen some cool stuff done with t lines, but the box is always very huge from what I have seen. They can make a 6 inch skar sound like a 15.
Hands down your content is number 1 from my point of view. Awesome box really wasn’t expecting that from a T-line
hey sam, Great Series! Totally addicted! i think we need to brand ourselves Team T Line lol
TL sounds best on music. I have 2 15's in a quarter wave tuned at 27 and it plays from 20 to 55 very linear. The bass is very full and warm. Also with much lower power needed. Hope this summer to make it to 4 15's in a t-line if i have the time to build the box.
Isobaric load your 15s.
@@numlockkilla I never tested this type of box. Can you show a example?
@@Kilowatt887 Hi. Do you mind helping with specs on a t-line for 2 15s
@@numlockkilla Why would he do that? The advantage of isobaric is the sealed section can be half the size. You end up with the same cone area. There's no real advantage to it in this application.
LMFAO! Only Sam could make that little speaker on video look and sound like a full scale loud ass demo. Great Job man!
This series is awesome. I appreciate you starting it so I can learn about different style boxes with excellent data so I can get more knowledge about my passion, car audio. You are by far the most knowledgeable.
I’ve learned more about how ported boxes work at this time of this series than what have in the many many years I’ve been interested in car audio. These video tests puts things to work in a way I can understand better than reading about it. Thank you 🙏🏼✌🏼
most humble youtube series!
I knew this series was a great idea when you first came up with it and it hasn't disappointed.
I am compelled to say - turn that clamp around so the bar isn't pointing up at you. :) Great vid!
Pretty cool 😎 series this is turning into .
0:10 lets goo❤
best new car audio series on youtube 100% keep it up!! i love these
Can't hate on the simulated kerfed port look. Immersion and all that.
It truly is amazing what these little speakers can accomplish. I love my Bluetooth with dual passive radiator I hope you could throw a box design like that in the competition
Yea! Some passive radiator boxes being tested would be sweet
Where would you get passive radiators that small? Is that something they make? Maybe make one from an existing driver?
@@JasonWW2000 actually they have them on parts express or Allie baba
Your 20hz T-Line with the Pioneer driver was what got me on to your channel :D
T line is playing good and clean but these boxes take up lots of volume of car trunk , but would be fine to keep at home and wife would not allow it but t line has to stay
WOW that's amazingly awesome i would love to have a bigger one setup for like 4 8" or 2 12" I bet they would sound so freaking amazing
Justin Joy doing his thang!
Nice one Sam 👍🏻👍🏻
thanks for this series man.
There are 2 tips of audiophiles .......that how like they're ears to vibrate
.......that how like to feel that vibration
The evolution of the is channel is impressive keep up the hard work 👍
Wow good to see it got up there lol
Good job Justin! Nice job. T-lines are very difficult to design accurately. Impressive...
@@nnperformance76 thank you. I did go through a few iterations of this. If I submit another i may tune lower. I was relying on the cabin fq to carry the 25 Hz and it did with the door open.
@@justinjoy593 advice. Remember the specifications of the test. Simple terms it would play way louder if power wasn't limited! Trying to design under the specifications given is very difficult. You did a really good design...
Thank you. Yes the constraints definitely play their role. i love this series. Its the perfect test and tune for designs
I built a 10 inch T-line back in the day with a chamber behind the driver and a long maze port. It sounded great, I regret selling it today.
If the T-Line has the same bore dimensions from behind the driver to the opening then it will act like a cylinder with one closed end. In other words it’s acoustically the same as a clarinet, which also only plays every other harmonic. This because instead of a quarter wave it acts like a half wave due to the wave needing to travel the entire distance of the T-line and back before unloading. This a tube with one closed end will play twice as low as the same length tube with two open ends. This only happens if the dimensions are the same all of the way through the tube or t-line.
Wow. What a beast! And talk about cone control.
Another great video, Sam, thank you!
t-line mini, super cool
Throw the extra box in the oven at a low temp for 10-20 minutes. It should make the layers to adhere together.
I have a design that worked very well IRL and would be a nice comparison with this one if you'd like. It's a "horn" but also a transmission line, but also I increased the size of the line behind the speaker to make the enclosure reach down to 24Hz. It is a more regular design that should be able to print well. If you'd like it then I'll get in FreeCAD again and try to figure out how to scale the model again. It's on my channel
Just send it in to him, he will decide if it makes it to testing.
Two part ca glue might work on the split box.
Insane 😳
Sick vidddd
Love it sam
Damn I need a t-line for my 18 asap!
Surprised the last turn wasn’t curved.Sometimes loudness perceived by our ears is different from a device. Maybe has to do with the funnel shape of our inner parts of the ears.Just guessing on the last sentence.
Im starting to think some of the vibration common with all/most boxes is from the plastic used to 3d print them.
Always interesting!
Amazing thanks ☺️
6th order box nextttt
Anyone heard of a Labyrinth vented box Is that basically a T-Line box? Bought one off Amazon advertised as an SPL subwoofer box. The port wraps around itself like this but not nearly as long. I always thought it sounded like a mix of sealed (sq) and ported (spl).
I can see why a lot of high end home audio set ups use the t line I think jl audio also has a r line for home / church use
removing the toilet paper in case it affects the reading lol :D what a beast
Looks similar to inside the Bose wave cd radio unit
Headphone approved lol👌
hey mate, this gave me an idea, I have a ported W-Bin design but unsure if the driver will mount as a front loaded design? let me know if you think you can mount driver like that and i will scale it send it in!
If you used abs then you can use acetone
CA glue and activator should fix Thao AE walls in seconds
iso half wicked
Wonderful series! I was wondering about voice coil temperature - would a 1/6 scale model predict full scale performance? I'm having some heat issues due to high loading in my designs..
Yes it will perform identical to the full size version provided the small driver parameters are similar to the driver you'll be using irl! 😁
Do you think you could give us exact specs of the "car" Id like to build a replica and test box in it before I submit I know it says 19.68 liters and gives the top and bottom dimensions what about width? This is becoming a fun hobby for me and good learning tool for my kids. Weve done a lot of 3d printing for their school projects and theyre getting into this and seeing the results from the things im printing for it.
What you have made there in my world my son is a sort of "scoop bass" they have nasty phase problems, we need to meet up by the way,
I have a eminence lab 12 driver would like a compact t line sub plan
Try epoxy for the side of the box or just print another one for the 2nd good one
Do you still amp repairs my transformer has gone I can see some wires not connected on the coil can this be fixed thanks
Can we get a track list for cruising?
Lol it vibrated the meter off !
How can I give you my idea
T line need alot of space...but the low bass is super smooth and heavy..
Suitable for modern low bass musics..
How we get the plans
how do headphones reach such lows with tiny drivers? would be interesting to 3d print a box that reaches audible 20hz when you have your ear up against it. 3d printed super bass headphones, awesome? i have no idea of how i would design it though
Omg that's a pretty crazy idea lol
Effectively just cabin gain. The smaller the chamber the more it boosts the low frequency response.
Also, since headphones are right next to your ear they don't need to be loud, allowing you to trash efficiency for LF extension
Random thought: TLine as the rear chamber of a series tuned 6th
What would that be called and would that make sense? Would it be different as a parallel tuned 6th?
If it's a true t-line it would technically be 5th order. But I've seen a handful of designs that use quarter wave on the front of the driver to boost efficiency and a Helmholtz resonator on the back wave to extend the bass shelf. The Klipsch jubilee does that
second speaker for a ISO
How long did it take to print the tline box??
4th order wall
👍👍👍...
1:14 I dont understand how 180cm wave (190Hz) translates to 30Hz due to "scaling". Doesnt sound of speed remain constnant 180cm wave is always gonna be 190Hz no matter how you scale your box?
Think about how the note on a wind instrument gets lower the longer the tube is made. Same situation here. We are scaling every thing by a factor of 6, so to play 190hz we only need 45cm line, as opposed to needing 285cm line for 30hz. Acoustics is just fluid dynamics and scales perfectly, but you have to scale EVERYTHING, frequency, dimensions, volumes, etc. You can't scale down a 30hz tuned subwoofer and expect it to still play 30hz when a 6th of the original size, which is where your speed of sound statement comes in.
it won't be the worst box. that's my only guess
If I put a woofer into a long tube, such as one used when working with concrete, and just leave one end open, could I get the same results as a T-line box? Of course the disadvantage would be a extremely long tube, wouldn't fit into a car but would maybe work in a living room?
Look for Sonotube subwoofers.
Interesting, maybe a tube standing up with the sub on the bottom and the open tube near the ceiling. Maybe 6' long unless you have raised ceilings. That might create some good output and not take up much space.
@@JasonWW2000 that's what I was thinking too! I'm mainly just curious, but concrete tubes are cheap... I might have to try it just for the heck of it, it will of course not be a ideal enclosure but I'm just bored and want to try something different:P
That would work..
But if you want to incorporate it into a house, use the spaces between floor joists.
Or even wall cavities... A 16" stud spacing with 3.5" studs is suitable for many 10" subs
Can we get a 3d printer sponsor to help out with full size comparison.?
I wish lol!
140db at 200hertz is very loud. It really can hurt your ears if you listen it long. You can listen to bass almost 160db daily with no hearing damage but 1khz at 120db is gonna kill your ears.
Did you ever use those mini T-lines you made for your car doors ? ;)
Every time I drive the car!
🙌🤜💎
You need a neutral white spot light on your face and you'll look like the rest of the big budget channels 😁
A horn loaded will beat all of them
I was right surprise surprise
Deep it in acetone ;p, fast.
Just use thin ca glue
loose uncontrolled sound from an open cabinet does no favours for sound quality. Drive units are not tightly controlled been driven in an open cabinet when it is been driven by the amplifier. Distortion gets higher with uncontrolled driver extension while not been able to play cleanly at higher sound levels. There will also be issues with cabinet resonances with a cabinet not treated by appropriate bracing and damping to stop those sound distortion resonances made from the uncontrolled drive unit distortions resulting also in sound distortions and vibration noise coming from of the cabinet .
What louder 2 ohms or 3 ohms
Loudness is usually associated with amplifier power. So if you test maximum amplifier power at 2 ohm and 3 ohm, you almost always get more power at 2 ohm.
@@JasonWW2000 thank you sir
Would an enclosure with a passive radiator and a port work? I have never seen one.
A passive radiator performs the same task as a port, so no need for both.
They wouldn't be optimal. Air spring vs radiator mass. By themselves they have thier advantages and disadvantages. However together. Juice not worth the squeeze.
Yes, it will be more compact but at the cost of a little less efficiency. If I recall correctly a passive is +9dB and ported is around +12dB roughly
Do Jbl flip 5
I have a crazy hybrid design. Problem is in order to submit it, it would be showing everyone else a design that could then be copied. My design is so unique I would actually like it patented. But with a series like this; it basically puts people's good designs on display which as stated, may result in someone copying it. So please anyone if you have interest in your intellectual property; patent or substantiate proof for your designs before sending them in. Who knows if one of you guys will come up with something groundbreaking and then someone else grabs that design and makes a profit.
If you wanted to submit it for private testing you're welcome to! There would naturally be a charge, and you would have to trust me to keep the design completely to myself, perhaps I can sign an nda or similar. Would be a good way for you to prove a concept in a controlled testing environment though which would be hard to replicate in full scale ☺
@@barevids I've actually already built a full-scale version and it is currently operating in my living room at the surround sound subwoofer. It is literally the best subwoofer I have ever heard or used in home. I always turn my in-home subwoofers even lower than I would in a car so I have that rumbling bass for movie tracks. And it handles everything Clean. It's only 2- 8" inch subwoofers and it's maybe 100 w total being pushed to them at max volume but with my hybrid design; I have bass that literally rumbles all the way to my third floor in the attic; rumbles my windows; and rumbles my doors to where I had to put thin foam strips in the door frame like you would for an exterior door, in order to keep my door from rattling. And it handles the higher frequencies tight, punchy, and clean as well. I won't go into the details of how but it it has three different frequencies at a ratio harmonic tuning. The harmonic tuning actually increases the output on all Chambers when an individual chamber reaches resonant frequency. I've already done what's known as the poor man's copyright on the design. But would rather wait until I actually go through the proper names for filing a patent before submitting it for testing. I can only go by my math and what I hear with my ears though since I don't have the equipment necessary to test it properly. But I can say that these two little eights on that little of power is actually just as loud to my ear as a 12-inch woofer that I had built for my car once on a 600 w.
By-the-way; if I wanted to send the design to you for private testing; what would the charge be.
@@jerichojoe307 that's awesome! Would be £50 as that's roughly what each video is making through CZcams and will cover filament energy and time.
@@barevids I tried to send you an email so that we can contact privately, but as expected CZcams is weird about that so the comment didn't register. How can I reach you for a private discussion regarding testing.
@@jerichojoe307 my email address is in the description
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200w would destroy this little 2" driver.
He was saying that it could take 200 watts at that one particular frequency without over excusion. It had tremendous output with virtually no cone movement. I don't think he was considering all the other factors like the voice coil heating up, etc...
Sounds better but still sounds like a fart.
It's the mic not the driver. Most mics struggle with bass really bad because of there size. Think of as a speaker clipping. A very small speaker way over powered.
@@thomasnygard2334 Okay.
I'm thinking he should try a different mic. I've seen Bass mic's on Amazon but they were rather expensive.
I just looked again and the AKG Pro Audio P2 High-Performance Dynamic Bass Microphone looks like a winner.
@@thomasnygard2334 or the SOLOMON MiCS LoFReQ Sub Microphone?
They are out there.
I haven't looked at one before. ( low frequency mic) But it might just be to much money for his channel. With that being said. He is probably not broke. But if the channel is run like a business it's a separate thing. ( From his personal finances as well it should) It wouldn't be sweet though.
I stand corrected 200-500 is an investment that needs. I thought it would be more around 1000/2500.
Bro, this little speaker sounds nowhere near this. Why are you adding so much bass to the recording to make this little speaker sound like it's 2-12" competition subwoofers?. It's barely moving the paper towel hanging. Bass this deep would eat the paper towel. Your also testing the little driver inside of a box like people are going to listen to this speaker with their head inside of a box. Pull the speaker out into the open in the room and test it. You know, actual normal testing peramiters. I can test a pair of earbuds inside of a box and get better readouts.
I dont think you've watched how this series works ☺ the demos are played at x6 speed and slowed down in editing. The distortion heard is literally the microphone on my phone unable to cope with the 140db inside the cabin. There's no bass or gain added at all in post. Happy upload a raw clip from my phone. I don't think anyone's phone would take 200hz at 140db and not distort lol
goddamn you stupid boy
It's an experiment... and helping a lot of audio enthusiasts in the process. Hope this wasn't ment as a negative comment but just a miss understanding of the experiment/testing requirements.
So, you edited your comment drastically, with new issues - you completely misunderstand this whole series. Go back and watch the pilot episode. This series simulates a car audio environment at a 1:6 scale. Yes, people DO sit inside boxes and listen to speakers, aka vehicle cabin and subwoofer. This is not simulating hifi, home theatre, or anything like that. I guess it pays to understand the content you are criticizing before making yourself look silly.
I guess the whole “scale” thing went over your head along with the testing frequency.
Many people start with small driver (normally like a 8”) and experiment with tuning and different enclosures/ size and port volume and when they find something that’s works well they then Scale it up larger and see if the results translate over.
This is exactly what this serise is about see which works the best and then scale it up and see if the results are the same.
BUT If you can do a better job go ahead and show us how it’s done, we are all waiting