Transmission Line Speakers DIY Floorstanding Build with 4" AIYIMA Full Range Drivers

DIY Floorstanding Transmission Line Speaker Build with AIYIMA Full range 4" drivers. FULL BUILD easy to follow video for the hobbyist. 900mm.
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Listed below are various items used to complete the build. (Please support my channel by using these links - trust me, I did a lot of searching to save money and it won't cost you any more!!)
SPEAKERS/DRIVERS AIYIMA 4" : s.click.aliexp...
PARTS USED:
SPEAKER FEET: s.click.aliexp...
SPEAKER BINDING POSTS: s.click.aliexp...
HEX SOCKET SELF TAPPING SCREWS: s.click.aliexp...
SPEAKER GASKET: amzn.to/3kSGqpn
SPEAKER WIRE: amzn.to/3KSkUM6
POLYESTER WADDING/FILLING : ebay.us/4Y4pEh
8mm x 3mm MAGNETS FOR SPEAKER GRILL: amzn.to/3kLDDye
TOOLS USED:
BAND CLAMP : amzn.to/3lQ00pO or s.click.aliexp...
CENTRE PUNCH (Spring Loaded) s.click.aliexp...
100mm HOLE SAW: s.click.aliexp... (For The Driver Cut Out)
RABBETTING BIT: amzn.to/3shHgQg
CRIMPING TOOL : amzn.to/3FjxNy2
KATSU 1/4" PALM ROUTER : amzn.to/3X24EyH
FLUSH CUT ROUTER BIT: amzn.to/3TFbVSZ or s.click.aliexp...
MUSIC
Fragments by Nomyn / nomyn
Creative Commons - Attribution 3.0 Unported - CC BY 3.0
Free Download / Stream: bit.ly/l-fragments
Music promoted by Audio Library • Fragments - Nomyn (No ...

[@kennethward4985]

I found an old pair of Radio Shack TL towers in a thrift store, from about 1985 best guess, they actually still worked. But I dropped in 8" full range drivers and disconnected the tweeter. Wow amazing magic sound for all types of music, and I spent a total of $150. I don't know why someone isn't making these now, I have some great speakers but I mostly listen to these, even for classic rock radio, just so deep and full. And highly efficient, 100db plus easy and cheap to build.

[@DIY-AUDIO]

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!!

[@zoltankaparthy9095]

Lovely, brilliant. Love TL's as they are efficient and "out of the box."

[@DIY-AUDIO]

👍

[@dw6015]

The irony of a speaker build video with nightmarish back round music. Awesome build though!

[@DIY-AUDIO]

👍

[@Gullikaktus]

you might wanna be careful using a table saw while wearing gloves. when you are wearing gloves and you accidentally touch the rotating blade they can get tangled up and kind of "suck in" your whole hand. without gloves you might be lucky and just get a small cut or in the worst case loose a finger (still better then half of your hand)

[@DIY-AUDIO]

👍

[@Jil8840]

Amazing. It sounds like a subwoofer is playing there too!!!!!!

[@DIY-AUDIO]

👍

[@kevinamante7158]

Cant wait for the sound test review 😊 keep safe and God bless

[@impuls60]

You should really chamfer the inside of the driver hole. Makes a noticable improvement. I am really looking forward to hearing them play in the next vid!

[@DIY-AUDIO]

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

[@juststuff5216]

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!

[@c.p.2807]

@@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.

[@MrAKbass]

Lovely build! Question, is there a reason you choose to put the full range driver at the beginning of the line? Putting the driver at approx. 1/3 rd of the line will reduce the typical transmission line "hole" resulting in a smoother lower midrange response. Btw. I know it's seems intuitively better to "round off" the inner corners of the line but doing so results in more midrange frequencies making it's way through the line and therefore colouring the sound. Long wavelengths aren't hindered by not rounding off the corners.

[@DIY-AUDIO]

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.

[@MrAKbass]

@@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!

[@juststuff5216]

@@MrAKbass kzbin.info/www/bejne/Y4aWiYpsibtssKs 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

[@MrAKbass]

@@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?

[@Grommet2007]

@@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....

[@clc2112]

nicely executed. solid methods.

[@DIY-AUDIO]

👍

[@1moderntalking1]

Outstanding work mate 👍

[@DIY-AUDIO]

Thanks

[@julianjennings4638]

Sikaflex is messy. Don't wipe it off. Let it dry and cut the excess with a blade.

[@DIY-AUDIO]

👍

[@angelodedios8025]

Beautiful!

[@DIY-AUDIO]

👍Thanks

[@mmatja]

They look awesome!

[@DIY-AUDIO]

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

[@mmatja]

@@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 :)

[@DIY-AUDIO]

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

[@juststuff5216]

@@mmatja Look here kzbin.info/www/bejne/Y4aWiYpsibtssKs

[@Coneman3]

Nice work.

[@DIY-AUDIO]

Thanks 👍

[@philipgrobler7253]

Great stuff, I hope I will find the measurements for the internal transmission line baffles somewhere.

[@DIY-AUDIO]

👍

[@sethh8892]

Looks badass, but a true transmission line enclosure shouldnt have a loading chamber if I do remember correctly.

[@DIY-AUDIO]

👍

[@mattiasrc]

Great build, looks really nice.

[@DIY-AUDIO]

Thanks! Another build coming in a couple weeks

[@vicentvanmole]

so nice work .wish I can take order . I don't have so many wood working tool or space for

[@DIY-AUDIO]

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

[@julianjennings4638]

Panel damping! Use Sikaflex 11FC. Instead of wood glue. Also 1/8" aluminum sheet with 1/2mm Sikaflex on the inside as a de coupler. Apply with a ribbed contact adhesive applicator. Make the alley sheets 1/2" smaller than the internal panels. Then add 1/8 sheet of plywood on top.

[@DIY-AUDIO]

👍

[@zacharyybarra7676]

Subscriber # 400 haha, keep the vids comin!

[@dott.ing.antonioscalzullo7938]

Caro amico, grazie di cuore per il tuo lavoro. I diffusori sono bellissimi. Dove posso trovare i disegni costruttivi per realizzarli ?

[@DIY-AUDIO]

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!!.

[@ricocasilli3307]

Nice job mate, not a true transmission line though, more of a bass reflex speaker with a huge port, but there is nothing wrong with one of those, nearly as good of a frequency response and abit more db 👍 (from my experience anyways)

[@DIY-AUDIO]

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!

[@ufarkingicehole]

Any reason you chose these drivers? Whats the frequency of this set up? I would love to see the dimensions if you had chose an 8 or 10 full range / coaxial Awesome build!

[@DIY-AUDIO]

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.

[@Justanalog]

Hallo. Wow...beautiful. Good job. Where can i find box project with measurements for transmition line? Thanks

[@DIY-AUDIO]

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

[@Justanalog]

Thanks for the answer

[@davidclarkenumber1]

beautiful work, after painting your speakers you should polish them with some compound to remove the orange peel and get a pro finish. Really like what your doing and just subbed so keep the vids coming haha

[@DIY-AUDIO]

Thanks David!

[@jorgeborja5809]

Great videos on your tutorials! Can't seem to pass on your uploads. I've got a pair of Aiyima 4" drivers and would like to do a DIY just like what you have exhibited in this tutorial. Would you happen to be kind enough and provide the specs of these floor standing baffles of your? Thanks a lot and really appreciate these videos of yours....

[@DIY-AUDIO]

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!?

[@jorgeborja5809]

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

[@DIY-AUDIO]

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

[@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

[@JohnSmith-kn5wt]

There are far too many assumptions made to the viewer in this video. But I will say the end result is nice.

[@DIY-AUDIO]

👍

[@Mikhaylov2012]

everything is awesome. but why with flaws and without varnish

[@DIY-AUDIO]

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!!

[@5ar12345]

Is it possible to get plans with measurments for this boxes? Thank you....

[@DIY-AUDIO]

Sorry, no longer have them or the drawings.

[@matthewdartford9501]

lovely stuff, Id love to try this myself. Do you have any build plans available?

[@DIY-AUDIO]

Sorry no but there are plenty on line.

[@craigtomlinson2075]

You’re in serious need of a dust collection system to save your lungs!!

[@DIY-AUDIO]

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

[@praveenkrishna6710]

Hi sir excellent work.Can I Increase the messurements and use a 8inch woffer drive for the same model speakers boxes

[@DIY-AUDIO]

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

[@praveenkrishna6710]

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

[@DIY-AUDIO]

@@praveenkrishna6710 speakers are linked in description!

[@scottyulnick7018]

When building a T-Line enclosure, do you know if there is a difference between mounting the speaker parallel or perpendicular to the line? I don't know if I'm describing it properly, but I'd say your design has the speaker mounted parallel with the line.

[@DIY-AUDIO]

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

[@scottyulnick7018]

@@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!

[@1moderntalking1]

Good build far out! Do you live in Australia?

[@DIY-AUDIO]

No, the UK!

[@cburner]

5:26 You closed the box without cable inside? Where are the ports? At bottom or top?

[@DIY-AUDIO]

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!!

[@janinapalmer8368]

What were the dimensions of all the panels ? Cutting 45° chamfers and getting a good fit is DAMN HARD !!!

[@DIY-AUDIO]

They stand approx 90cm tall!

[@TitofBee]

very nice, but how does it SOUND ?!

[@DIY-AUDIO]

This will give you an idea: kzbin.info/www/bejne/jHyodZqjm7l8pa8

[@juststuff5216]

Sound Test, Sound Test, Sound Test 😎😎😎😎😀😃😄😁

[@DIY-AUDIO]

kzbin.info/www/bejne/jHyodZqjm7l8pa8

[@RondenBreems]

How do I know wher to put the inner sheets. The position seems to me to be very important but I cannot find any measurements. Please help...

[@DIY-AUDIO]

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!

[@warpspeed9877]

Τhere are two ways to construct a TL : keeping the port the same throughout the length or having it tapered (usually to 1/2) of tube cross-section. You seem to follow the first route but the final exit part seems a bit larger in volume. If this is not an optical illusion what was the thought behind it?

[@DIY-AUDIO]

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

[@juststuff5216]

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

[@juststuff5216]

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

[@janinapalmer8368]

I reckon the cost of making these speakers is dwarfed by the cost of all the equipment used to make them !!

[@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!!)

[@briansallee4262]

Did you measure the frequency response?

[@DIY-AUDIO]

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

[@alaingingras7224]

These units look good .But I am worried about QTS .77 ...

[@DIY-AUDIO]

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

[@alaingingras7224]

No doubt ...@@DIY-AUDIO

[@alaingingras7224]

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

[@tombeck2792]

No gloves near rotating machines, remove gloves, or use the saw guard please

[@movingon1899]

Thanks for the advise Tom!!

[@jjhack3r]

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.

[@A.X.N]

How do thoose Aiyma drivers sound? Are T/S parameters available somewhere?

[@DIY-AUDIO]

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!

[@st170ish]

They look great, nice work 👍

[@A.X.N]

@@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!

[@A.X.N]

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

[@DIY-AUDIO]

@@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!!

[@Richter1otaku]

Where do i get the dimensions for the wood? And the insides ?

[@DIY-AUDIO]

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

[@juststuff5216]

I designed a very similar enclosure 3 years ago! Have a look here kzbin.info/www/bejne/bnS2oH58gc-Eos0 and this is how you download and mess around with the model kzbin.info/www/bejne/n5akpGp3mLNpadE All the best

[@haidang92it]

Can you give me information about paint brand and paint color?

[@DIY-AUDIO]

It's graffiti acrylic spray paint. Graffcity.com

[@JadaCastellari]

What do they sound like?

[@DIY-AUDIO]

Review here : kzbin.info/www/bejne/jHyodZqjm7l8pa8

[@d.s.cullom5461]

Is there a speaker plan for doing this build?

[@DIY-AUDIO]

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.

[@juststuff5216]

Yes there is, as I designed a very similar enclosure 3 years ago! Have a look here kzbin.info/www/bejne/bnS2oH58gc-Eos0 and this is how you download and mess around with the model kzbin.info/www/bejne/n5akpGp3mLNpadE All the best

[@skyhr]

Sound test...?!? EDIT: Typo

[@DIY-AUDIO]

kzbin.info/www/bejne/jHyodZqjm7l8pa8

[@hendr7]

No sound

[@DIY-AUDIO]

? Test is on the channel

[@eliaswarg6818]

Double music.

[@DIY-AUDIO]

👍

[@eriktomasko8255]

Speakers look nice but practically useless to be honest. You called it transmission line but what I see is more like umm 4th order bass reflex with really interesting approach. The goal of TL is to get rid of resonances and you've made not one but two resonance chambers (one right behind a speaker and one at the far end)

[@DIY-AUDIO]

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.

[@juststuff5216]

@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!

[@Dawid33333]

Two musics added ?

[@DIY-AUDIO]

? Not sure I understand the question?