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Amazing!! . Surprising what you can create for not a lot of $ if you are willing to make a bit of effort. Most people these days want everything brand new and couldn't make a cake let alone something useful!!

Thanks! Another build coming in a couple weeks

Thanks

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Thanks. Sat listening to them now and they sound great!!

@@DIY-AUDIO looking at the design, I was kind of expecting that. If you find time to do a video on how they perform, I would be very interested. Thinking of a similar project myself :)

@@mmatja the review is on KZfaq. Review is for the AIYIMA speakers!

@@mmatja Look here kzfaq.info/get/bejne/Y7tji7pnubydqn0.html

Thanks 👍

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Take a closer look at the video...I did (just before assembling the inside!!)

I've been building t-lines exclusively for nearly35 years, and I've heard various theories. Chamfering the driver hole for a noticeable improvement … is one I've never heard of!

@@juststuff5216 This really depends on the chassis you use and how the cage is designed. Its just important that the air can flow, some have big magnets or an cover, so the air gap on the cut out can get a bit tight.

👍I didn't 10 years ago and just saved up and bought gradually!

I'm just learning about building speakers as a bit of a hobby so, appreciate your advise. Seems there is just so much advice online about building this type of speaker and I went down one of these routes. I'm sure with experience, and testing the builds will improve.

@@DIY-AUDIO The build quality looks very good though so my initial thought was that you're not really a beginner so to speak. Transmission lines are some of the more advanced designs. A good piece of simulation software (e.g. AJHorn) could help you make your transmission line builds even better. Keep up the great work!

@@MrAKbass kzfaq.info/get/bejne/Y7tji7pnubydqn0.html There's no ROT when it comes to speaker design, let alone t-line design. The 1.3 rule was propagated by Bose, but it's not the be-all and-end all, and like many other assumption t-line, it shouldn't be used in every design. Any individual design is based on the driver, the respective environment it's going into, and the individual listening preferences! And I don't agree that t-lines are some of the more advanced designs … in fact I think it's one of the easiest to get right. You just need a pen/pencil, a piece of paper or something to write on, and some very basic maths! Things go awry when one starts to add damping ... and I think that's what some may feel t-lines are tricky. But as the above video link shows, one can design and get right, a t-lines, without damping … in fact in my near 35 years of designing and building t-lines, I've rarely if ever used the stuff! As for other designs BR, Aperiodic, Bandpass and even to some degree, Horns … are far more tricky to design from off the top of one's head, and get right … IMO

@@juststuff5216 For a DIY starter a TL is advanced. A horn and TL can be simulated with AJhorn wich uses the same "model" to calculate it (and it's more accurate then pen/paper + basic math). It can also show you the effect of placing the driver on a different position of the line. For a system that will only be used as a sub it's perfectly valid to put the driver at the beginning of the line and in such cases you don't need excessive damping material (I also have approx. 35 years of experience desgning and building loudspeakers) Btw. how can you tell by the video that the t-line is right and can't be perfected by using a different design philosophy?

@@MrAKbass FWIW I wouldn't end-load a TL even if it was destined for subwoofer duty. The first resonance calculation may make integration with the main speakers a bit challenging. That resonance is depending on the length of the line only (not the amount of taper, etc.) and putting the driver 1/3rd of the way down the line effectively nulls it out. How effective the nulling is will also depend on how close the driver and the vent are to each other as well (which is why my TL designs have the driver and vent as close together as possible) The peaks and nulls that appear higher in frequency due to harmonic resonances down the line can be addressed by stuffing some parts of the line if necessary, but that first resonance is low enough in frequency that it needs to be addressed by other means. Hornresp can be used to sim what stuffing does to the response curve, and will also show that position of the driver and the size of the TL might have to be adjusted to compensate. FWIW, I thought that the sound of those speakers in the video shared by Just Stuff was not impressive. Just looking at the design gave me the impression that it would sound like a boomy "bass whistle" without decent midbass reproduction, and the sound of the speakers in the video just backed that up, LOL. But that could be because of the recording quality, and an FR curve would have provided a lot more information about how those speakers were really performing, at least on-axis....

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Hi Scotty, if you look at the other comment below, I've made it incorrectly apparently!!

@@DIY-AUDIO Thank you for letting me know. I should have read all the comments. These are still incredibly well built speakers, I'll definitely use some of your techniques in my next build!

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Mis-measurement tbh. Length of port was meant to be a tad shorter for the driver I used hence having to open it up at the end as carcass was already built

@@DIY-AUDIO T-lines don't have a port ... they have a *Line Terminus* !

@warpspeed Then why not call it a variation of a Daline transmission line?

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Sorry, no longer have them or the drawings.

Hi Chris, the ports are at front and cut out afterwards. It is shown on the video. Cable added afterwards, again in the latter part of the video as binding posts are at the top!!

Sorry no but there are plenty on line.

Yes, Imagine so. Use an online calculator to get the correct length for the transmission line. I miscalculated it!!

@@DIY-AUDIO what is the model name of the speakers called as?

@@praveenkrishna6710 speakers are linked in description!

From what I understood when i made these, it was to keep the same vent width all the same. The video is just a guide on construction techniques than perfect accoustics. If you google Transmission Line Speaker, wikipedia has quite a bit of info and useful links. Best of luck with your build!

Thanks - Reason for smaller size was the wife accepting having them in the house!! and as you will notice from the other builds on my channel, I try and build speakers that most people can afford to build (whilst still building to a good quality finish) hence this full range driver and the cost of it (relatively low) of the 4" drivers . With regards to frequency (I haven't tested them but hope to in the future). More builds coming in the near future with another smaller cube build incorporating this same driver.

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Thanks fornyour comments. Unfortunately, i dont have them i just went and built them😂😂. I am however currently building a large set of floorstanders that will have the build details. Watch out... Should be ready on the channel in two weeks!!.

Hi, there are a couple of online calculators online if you Google them. My video is more about the construction rather than actual measurements!

Thanks for the answer

Thanks Rico, yes you are right. Working on a Nereid TL speaker at the moment Should be on the channel in a couple weeks or so!

Hi Brian, no I didn't. I didn't have any measuring equipment at the time! Have a Merry Christmas

Hi, unfortunately I find I prefer the eggshell finish anyway but, I tend to use acrylic paints (a, they are quite cheap and b, they can be used in cold temperatures) grafitti paint is ideal for this and does coat really well and leaves a smooth finish when dry even in colder conditions. I am sure that yours will look great in a high gloss finish!!

They stand approx 90cm tall!

Thanks David!

No, the UK!

I'll be doing a review in the next week or so. Quite punchy sound though and they seem very well built for the price and certainly look good. Link to drivers in the description of the video. Some parameters but a little sketchy to say the least!

They look great, nice work 👍

@@DIY-AUDIO Cool, thanks, great work btw! Right now I'm building a pair of 2 way bookshelves. Dayton DSA115 + Dayton ND25FA with 2 DSA115 passive rads in a 3.8 lt box. I hope they come out as I planned XD But I wanted to do a more budget friendly build next time and I was looking at the PS95 full range drivers... these Aiyima look pretty similar so I was wondering if I should go the cheeper route:) Looking forward to the review!

@@DIY-AUDIO also, I'm super curious about how you design the transmission line, that would be an awesome vid :)

@@A.X.N I have looked into and done other builds with the Markaudio range. These AIYIMA ones are similar sound wise to the Pluvia 7HD series but less than half the price!!

It's graffiti acrylic spray paint. Graffcity.com

This will give you an idea: kzfaq.info/get/bejne/jLF1d8qey7qtn4E.html

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Review here : kzfaq.info/get/bejne/jLF1d8qey7qtn4E.html

Hi, no, I'm afraid not. I just use a sketch book for my builds!! However, external Measurements are in the video and it's made from 18mm mdf. There are calculations online to help you calculate the length of the transmission line to suit whichever speaker you go for. Must also add that these are just bedding in and are starting to sound really great for the cost.

Yes there is, as I designed a very similar enclosure 3 years ago! Have a look here kzfaq.info/get/bejne/bqmDoq53sdC1nJ8.html and this is how you download and mess around with the model kzfaq.info/get/bejne/n8txpppyyLSaY6M.html All the best

Hi Jorge, off the cuff design and unfortunately I don't have them anymore, a friend has them. Will get him to measure externals and let me know. It may help you!?

@@DIY-AUDIO thank you very much and i really appreciate it. Hoping for more tutorial videos from your channel.

Externals are 90cm x 23cm x 16cm. 18mm MDF and transmission lines need to be equal distance apart. Hope this helps? ​@@jorgeborja5809

@@DIY-AUDIO thank you sir! Will go thru the dimensions and will see how it turns out...once more, greatly appreciate the effort and your kind accommodation

Hi, measurements are at the start of the video and I used 18mm MDF in the build. Hope this helps?

I designed a very similar enclosure 3 years ago! Have a look here kzfaq.info/get/bejne/bqmDoq53sdC1nJ8.html and this is how you download and mess around with the model kzfaq.info/get/bejne/n8txpppyyLSaY6M.html All the best

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kzfaq.info/get/bejne/jLF1d8qey7qtn4E.html

Just bare in mind the price of them. Spend more and sure the quality will get better!!

No doubt ...@@DIY-AUDIO

Yes that is true.Just this hour I got Fostex FF 125wk for 135 cdn per ,Yes that is more x-pensive but...In the end this is a NEVER ending journey ,so we all have real music and fun ! Cheers !@@DIY-AUDIO

We all need to have our hobbies, a set of golf clubs cost more than all the equipment i had to make these speakers (most was bought second hand!!)

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I have set up and also wear a mask when cutting the MDF😁

kzfaq.info/get/bejne/jLF1d8qey7qtn4E.html

Thanks for the advise Tom!!

Forcing people to be safe is like forcing them to be on your diet. Jumping from a plane isn’t safe, but people make that choice on their own.

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? Test is on the channel

Thanks for your comments. I do understand your point and take on board what you are getting at. These don't really suffer from much if any resonance as they had been very well damped with insulation of various types after the photos were taken and only have 20 watt max full range drivers. My main aim here was to demonstrate a build process.

@Erik Tomáško You could call it a variation of a Daline transmission line, if you like ... but you already knew about Daline's, I'm sure!

? Not sure I understand the question?