Transmission Line Speakers - DIY Nereid T/L Speaker Build. 4" Markaudio Pluvia 7.2HD Full Range

DIY Transmission Line Speakers (Nereid). Build your own Speakers with superb sounding 4" full range drivers built into a pre-designed (FREE BUILD PLANS AVAILABLE) transmission line speaker cabinet. These have been finished with a black oak real wood veneer, the Markaudio Pluvia 7.2HD drivers and handmade stainless steel rear terminal plugs with binding posts.
Markaudio specialist Full Range Drivers are designed for the DIY build enthusiast and provide full plans to go with their drivers. Checkout their website at www.markaudio.com
TUNED - 57hz (measured with DATSv3)
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SUBSCRIBE: / @diy-audio
WEBSITE : www.oneoffaudio.com
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Listed below are the various items used to complete the whole build. (These are affiliate links - You won't pay more for using the links below but, it will pay me a small commission which will help me produce more videos!! - Thankyou).
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(WORLDWIDE DELIVERY) MARKAUDIO PLUVIA 7.2HD DRIVERS : ndt5.net/c/?si=14570&li=16273...
SOUNDIMPORTS: ndt5.net/c/?si=14570&li=16273...
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PARTS USED:
SPEAKER CABINET FEET/ISOLATORS : s.click.aliexpress.com/e/_DmH...
REAR TERMINAL PLUGS : s.click.aliexpress.com/e/_DE4...
BINDING POSTS: s.click.aliexpress.com/e/_DER...
HEX SOCKET SELF TAPPING SCREWS: s.click.aliexpress.com/e/_DEP...
BLACK OAK VENEER : ebay.us/8K7skC
GASKET FOAM 8mm x 2mm : amzn.to/3HeH8JY
SPEAKER WIRE 16 GAUGE: amzn.to/49iXIny
COTTON WADDING/FILLING : www.upholstery-supplies.co.uk/
AMAZON PRIME FREE 30 DAY TRIAL : www.amazon.co.uk/tryprimefree?...
TOOLS USED:
BAND CLAMP : amzn.to/46V2p5v or s.click.aliexpress.com/e/_DnF...
CENTRE PUNCH (Spring Loaded) s.click.aliexpress.com/e/_DB0...
100mm HOLE SAW: amzn.to/3MqcS0f or s.click.aliexpress.com/e/_DBc... (For The Driver Cut Out)
53mm HOLE SAW: amzn.to/3FKrYKu or s.click.aliexpress.com/e/_DlQ... (For Rear Terminal Plug Cut Out)
RABBETING BIT: amzn.to/3u1I1kA
CRIMPING TOOL : amzn.to/3u1w3Y2
KATSU 1/4" PALM ROUTER : amzn.to/3FJnwLW
FLUSH CUT ROUTER BIT: amzn.to/3QJo2jy or s.click.aliexpress.com/e/_DB4...
AMAZON PRIME FREE 30 DAY TRIAL : www.amazon.co.uk/tryprimefree?...
FREE BUILD PLANS : www.markaudio.com/wp-content/...
HOW TO VENEER SPEAKER CABINETS : • How to veneer speakers...
BUILD FEATURING DIY BINDING POST BUILD : • DIY Speaker Build. Co...
SOUNDIMPORTS (DRIVERS - WORLDWIDE DELIVERY) : ndt5.net/c/?si=14570&li=16273...
0:00 Intro
4:20 Transmission Line
6:22 Veneering the Speaker Cases
9:45 Rebating the Drivers
13:00 Final Assembly
14:43 Sound Test
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#diyaudio #diyspeaker #markaudio #speakerreview #audiospeakers #diybuild #subwoofer #music #transmissionline #bookshelfspeaker #transmissionline #diyspeakers #mdfbilds #mdf #woodworking #veneer #fullrangemusic #diysoundbar

[@cobar5342]

Thank you for a very good (and inspiring) video

[@DIY-AUDIO]

Thankyou for your comments

[@alexogle8950]

Operating that table saw with that tassel from your hoodie hanging down made me wince...

[@DIY-AUDIO]

Me too🤣🤣 optical illusion, it was miles away!!

[@valvemonky4734]

me too

[@johnbrewer2206]

Big fan of full range drivers, they can be a lot of fun if driven correctly

[@DIY-AUDIO]

👍

[@TheDjcarlos67]

Sometimes the KZbin algorithms recommend exactly what I want 😁 I fancy building a pair of my own speakers after I made a hybrid pair of floorstanders using 60s Dynatron cabinets and 70s Celestion Ditton 15xr drivers and crossovers. Pure luck but they sound great with my Quad amps & LP12. Definitely interested in creating a pair of these myself

[@DIY-AUDIO]

Good luck with your build Carlos

[@securecodingdevelopment5023]

excellent, finally I see a design with the use of 45 degree joint, thanks for sharing.

[@DIY-AUDIO]

👍

[@carlosmacmartin4205]

Lovely pair of speakers! 👏🏼 Bravo 😆 Thanks for sharing!

[@DIY-AUDIO]

Thanks

[@carlosmacmartin4205]

@@DIY-AUDIO You're welcome! Greetings from San Francisco, California, USA 🇺🇸 Cheers!

[@gdwlaw5549]

I have just joined a woodworking club in Montpellier and this will be my first build.cheers

[@DIY-AUDIO]

Good luck with it. Off to France this year with hopes of moving there one day!!

[@gdwlaw5549]

@@DIY-AUDIO I moved here on the end of 90’s. It’s great. I can really recommend the Cantal region for renovating property. Very inexpensive.

[@DIY-AUDIO]

@@gdwlaw5549 haha!! Will be looking at the cheaper regions then.

[@gdwlaw5549]

@@DIY-AUDIO montpellier is very expensive and I was amazed to see a chateau for the price of an Appartment !

[@mauserkk98]

Nice ,I'm liking your work . Have a good Christmas.

[@DIY-AUDIO]

Cheers You too!

[@Tacsmoker]

i wish i had the skills you have mate... always a beautiful end product.

[@DIY-AUDIO]

Thanks - it really is just a case to take your time!! (the tools help but they not the be all and end all!!) Merry Xmas buddy!!

[@megajoel]

Nice job! Thanks for sharing.

[@DIY-AUDIO]

👍

[@tonygradisa1280]

Excellent done!

[@DIY-AUDIO]

Thanks Tony

[@alaa_aldeen1985]

Amazing work worth subscribing to the channel 👍

[@DIY-AUDIO]

Thankyou, I appreciate your support

[@surround1969]

Very professional job ... thanks

[@DIY-AUDIO]

Thankyou!

[@paisteformula6021]

Lovely job!! 👍👍👍👍

[@DIY-AUDIO]

Cheers!!

[@andryusha4308]

Молодец! Прекрасная работа👍

[@DIY-AUDIO]

👍

[@safuraify]

It´s amazing job!

[@DIY-AUDIO]

👍

[@davidspendlove5900]

Nice work.

[@DIY-AUDIO]

Cheers David👍

[@BobbyKinstle]

I'm always shocked at how rich and full the pluvia 7.2HDs are. I haven't heard the transmission line variant yet. Now I'm curious. Great work on the build!

[@DIY-AUDIO]

Thanks, It's a surprising little driver!!

[@bellrobert1978]

My 7.2HD arrived today. I'm really excited to start my very first speaker build!

[@DIY-AUDIO]

@@bellrobert1978 good luck, take your time and I'm sure you will end up with something you are really proud of!!

[@iblesbosuok]

Transmission line speakers should avoid perpendicular corner and parallel planes. A good design of transmission line speaker was published in the August 1977 edition of the magazine Electronics Today International from Australia. I have assembled 2 pairs, they perform very smooth. Sorry for my bad language. Thank you

[@DIY-AUDIO]

Thanks for this

[@eltallerderuso]

Excelente trabajo!! Saludos

[@DIY-AUDIO]

GRAZIAS!!

[@davidmonk7773]

Never have clothing with cords dangling near spinning blade's 😂

[@DIY-AUDIO]

👍

[@ZappaTime]

My thoughts exactly, very dangerous scenario😬

[@fredsanke4070]

Nice build...

[@DIY-AUDIO]

Thanks Fred

[@Silent-Lucidity]

Very nice!

[@DIY-AUDIO]

👍

[@OMDF01]

Sibelius… at a fraction of the cost lol! 😅 Nice job! 👍🏻

[@DIY-AUDIO]

New pensil build coming soon !!

[@Justwantahover]

I'm impressed with the sound and it's not SHOUTY, without a correction filter. And (of course the bass is A1, being a trans). But it doesn't seem to sparkle enough. What I would suggest is an easy filter. 0 .22 mh inductor and a 2.2 electrolytic cap in parallel. I tried electrolytics and ceramic caps on FR drivers and tweeters. On FR drivers, electos sounded way better. More silky and less clangy (FR drivers tend to be clangy). But on soft dome tweeters, ceramic caps sound way better than electros. Ceramics give the wissy tweeters more clang. Another way to get more sparkle: Get cheap FR drivers (without the whizzer cone, or get rid of it) and use the drivers for this experiment: With a razer blade cut right through the cone. Make 8mm cuts all around the cone like only 3mm out from the voice coil tube. And have 5mm gaps between the cuts (that is not cut). Repeat on the dust cap if it's possible and repeat again like 1 cm out from the voice coil tube on the main cone. You can buy new DACs, buy new amps and streamers and new cartidge and turntable (and phono stage) and mono blocks in place of an integrated amp...but no upgrade will beat this easy little mod! The best treble you ever heard (even better that tweeters). Definitely worth trying. My $8 cheapies are 5" FR drivers and they (with several other acoustic features) are the best speakers I heard. They are semi open cones (with the mod) and it's semi omni directional with a big gap between the driver and the speaker box hole (with a short bass vent tube under the same hole). 😅 Witch stops the BONKY sound (I say "witch" cos it's magic). The driver gap is achieved by extension screws and flexible hose for the spacers. Bass level is no different to a traditional bass vent desigh. Even the bass vent is point source! Pure point source along with the advantage of bass reflex! Holographic off the scale! Med is open and 3D and also warm (instead of cold and thin and harsh, like fully open drivers). It's that open cone sound (witch again gives more khz) combined with the warm sound just like regular speakers. They smoke my (bought) regular 2-ways. More sparkle! More 3D and airy and way more spread of the highs. I have an unusual semi omni direction top mounting of the single driver on top of the ennclosures. This helps spread a lot, sounds nearly the same snywhere in the room. Yep I got filters on the drivers as well. Has the full range sound of 2-ways and 3ways with one driver cos of the slits in the drivers make it perform just like tweeters. Same glissy sound! But better cos tweeter are usually closed in, these aren't.

[@DIY-AUDIO]

Thanks for your time and comments. May try a small correction filter on an upcoming build, 👍

[@leoparddiy]

That's good speaker👏

[@DIY-AUDIO]

Thanks, sounds great for just a 4" driver. Way better than the sound test suggests!!

[@ichirou459]

豊かで質のいい低音がいいですね。たっぷりの吸音材が雑音を除いているみたいですね。

[@DIY-AUDIO]

👍

[@Matrix...777]

TML👍 my first diy in year2003, keď môžem poradiť , hrany predného panelu musia byť frézované do oblúka alebo 45°

[@DIY-AUDIO]

👍

[@MrAlexandreazevedo]

Very interesting video. Markaudio Pluvia 7.2HD Drivers are very good, I also would like to do a similar speaker cabinet design for these drivers or for the SB Acoustics SB20FRPC30-8 8" Paper Full Range, I have seen very good reviews about this speaker and it would be an interesting project to do. 🙂

[@DIY-AUDIO]

Thanks, It's a great driver in my opinion for the money (takes a bit of running in) but just seems to sound better as time goes on!! Loads of cabinet plans on the Markaudio website

[@MrAlexandreazevedo]

@@DIY-AUDIO yes, and because it's a full range it's simpler to build as it doesn't need a crossover. I also would like to find cabinet plans or open baffle plans for the more cheap SB Acoustics SB20FRPC30-8 8" Paper Full Range but the few I find are big floor-standing cabinets that are too big for my space, so maybe Markaudio Pluvia 7.2HD or the Markaudio CHP-90 Drivers are a good option too because they are smaller and they have a lot of speaker cabinet plans in MarkAudio website. Thank you for the demonstration video, I find it very useful.

[@rv331]

Hello! Very nice build, and a helpful video for all DIYers. Congratulations! Please let me know what veneer edge trimmer do you use? Any link should be useful. Thanks!

[@DIY-AUDIO]

Hi, thanks for the positive comments. I use a cheap hand router. It's listed in the description of the video Katsu and some flush mount bits. It's lasted really well for the money. Here is link for you to save you looking. amzn.to/3X24EyH

[@MuhButtsBeenWiped]

I need to buy another router so i can do some speaker projects. Ive been eyeing up one of those CSS bookshelf kits but the boxes they supply you with are lackluster to say the least. I figure rounding off some edges and covering it with cherry veneer will make them look like they cost as much as they do. 😅

[@DIY-AUDIO]

The little hand router I do have is perfectly fine for under £40GBP. Build them yourself, take time on finishing them and they will look fantastic I am sure!! A kit would be bottling out especially if you have some tools yourself or get your timber suppler to make the cuts for you. There are loads of builds online!

[@chinmeysway]

Nice. Interesting port design. Kind of a large opening maybe?

[@DIY-AUDIO]

👍

[@juststuff5216]

Great build! Mark Audio Pluvia Eleven Transmission Line Speakers kzbin.info/www/bejne/gIHGdHqBodmpp6M Back To My Roots - Mark Audio CHN-70 Transmission Line Speakers kzbin.info/www/bejne/bnS2oH58gc-Eos0 Mark Audio Alpair 12P Transmission Line Speakers kzbin.info/www/bejne/oIeTfZ2ko51_ZtU As for the real thing,I did have a pair of CHN-70's in a t-line, until I accidentally put a knee into one of the drivers and that was that. However, Mark Audio make killer fullrange drivers, that rival even exotica fullrange drivers IMO, and I miss them dearly!

[@DIY-AUDIO]

Thanks. Not the money yet for the next step up in drivers but for the average sized room, I find the Markaudio are superb. Will check out the other builds you have suggested.

[@peterjamesmacneil]

Liked your build, but why the cheap wire and press in clips.

[@DIY-AUDIO]

As its not a 'high' end/powered build I personally don't expect any noticeable problems with using the wire I did especially as it's about a foot long, or the female connectors (I assume this is what you meant by press in clips?)

[@enaudeni]

Which design with these Pluvia 7.2HD's sounds better the previous book shelf build or this one? I bought a pair but have not made my mind up about the plans, I have to weigh up space in the house vs what I want in sound characterics.... I am a PRO-crastinator.

[@DIY-AUDIO]

They are roughly the same size. Depends on looks. I prefer these, the wife the other ones!! Sound wise, possibly these are slightly better. It could be because the drivers have now had plenty of run in time. (same driver set as 1st build) you won't be disappointed but go with what's going to look best in your home. Make them your own!!!

[@Stephenwongdirectimaging]

Have you try make a bigger one like 8 inch and 10 inch drive . Lately I found a single drive Lii song silver 10 inch drive sound very very good think of diy one pair

[@DIY-AUDIO]

Not yet, am sure it will happen at some point this year!!

[@jofrposa]

Trabajo impresionante, por poner un pero para hacer un cajón tan grande y tan bien hecho unos 6 pulgadas y agudos podrían sonar mejor talvez.😅

[@DIY-AUDIO]

👍

[@SignorZukini]

Very nice work. Do you have any tips for getting mitre joints right with a table saw? Your cuts fit together so well.

[@DIY-AUDIO]

I've only got a second hand table saw so, use one of these to set up the blade: amzn.to/47yb91k Then I just take my time on the cuts!!

[@SignorZukini]

Thanks for that. I will do my best! You make a difficult thing look very easy.

[@DIY-AUDIO]

@@SignorZukini good taping and band clamps certainly help!!

[@DieTabbi]

So how do you think compares this speaker with the "Le Petit"? the one of most famous single driver speaker?

[@DIY-AUDIO]

I haven't heard the 'le Petit' in action and haven't tried the Fostex driver usually used in that build. All I can say is that in my opinion the Markaudio drivers are excellent (for the money) once run in and although I like this design (the one I built here) , I personally think it's slightly over engineered as there is no resonance from the cabinet at all. Some think this is how it should be but, for a full range driver and the type of music I listen to, I personally like a little resonance (think acoustic guitar) . This may be achieved by building in Plywood as apposed to MDF though.

[@julienvankemmel9182]

Hi mate, very nice build ! I've planned to do the same one as a Christmas present ! How does it perform on the lower frequencies ? I'm listening from techno to classic music, so bass and high are important for me haha

[@DIY-AUDIO]

The drivers I have have had plenty of burn in time and I listen to a variety of different music. Bass for 4" is amazing and highs are crisp too!!

[@julienvankemmel9182]

@@DIY-AUDIO thanks for the answer, let's build it 🙂

[@otron805]

will the sponge pasted in the cabinet reduce the bass ?

[@DIY-AUDIO]

No, technically it will just reduce resonance and echoes

[@nearchd504]

Does this sounds better deeper louder than two 8inch drivers in sealed enclosures? Pls compare TL with sealed

[@DIY-AUDIO]

Would love to if only I had the money!!

[@nearchd504]

@@DIY-AUDIO got it bro, won't skip any ads while watching your channel

[@thomasschafer7268]

😅😅super klipsch surface finish.

[@DIY-AUDIO]

👍

[@mimilt339]

The loadspeaker worked without a crossover components?

[@DIY-AUDIO]

It's a full range driver. You. Won't need a crossover.

[@user-zk2hl9ib9u]

это широкополосный динамик ему не нужны фильтры и кроссоверы

[@garmin1488]

Good table saw safety, lol.

[@DIY-AUDIO]

Wear goggles and let the kids do it for you!!

[@janinapalmer8368]

A true t/l speaker as a constant finishing taper from the rear of the driver to the port ... I'd expect the port for this speaker to be a lot less in surface area than what is depicted in this video ... and lastly what exactly was that black material you placed in the port ?

[@DIY-AUDIO]

It's a build from Markaudio specifically for the driver (link is in description). It's a piece of the same polyester wadding that the speaker is lined with (sprayed black)

[@janinapalmer8368]

@@DIY-AUDIO the proof is in the listening ... this isn't possible on you tube obviously ... this design looks very like a damped reflex ( ported ) system bordering on an aperiodic design ... the impedance curves for a t/l design and aperiodic are very similar . I don't like the wadding sprayed black ... a much better grill would be a small piece of expanded aluminium with edges formed at 90° and glued into position .. this can be sprayed semi gloss black and would perform very well

[@DIY-AUDIO]

@@janinapalmer8368 well Janina, thanks for your input. If I had the money and know how, I would of loved to make an aluminium grill but as I don't I didn't!! Oh, and as you say the proof is in the listening and yes, it's superb!! 😁

[@fonkenful]

Janina, if I’m not mistaken, this class of loudspeaker enclosure is more accurately categorized as MLTL - “mass loaded transmission line”, a term that I first heard used in the extensive engineering work published by Martin J King over 20yrs ago. It’s a modelling concept that was eagerly adopted by the DIY community, and there are numerous very success designs incorporating the precepts that do not require tapering of the line. The combination of careful placement of the driver and damping of the line with absorbent materials, consistent cross sectional area of the line, and area of the terminus are all carefully calculated for the T/S parameters of the bespoke drivers. While I didn’t notice accreditation on the referenced drawing, this enclosure bears all the hallmarks of designs by Scott Lindgren, who has a very extensive library of designs of which I’d personally built dozens during my active DIY career - the overwhelming majority of which were with various models of Mark Audio drivers. To another point raised in this comment thread, the smaller size range of MA drivers ( i.e. 7cm and below) definitely benefit from judicious bass management via HP filtering and separate woofers when applied for use in larger rooms or at higher volumes. I’m currently using an early generation of Alpair 10 for the front row of a 7.1 system in a moderate sized room (340sq ft), with the crossover to LFE at THX recommended 80Hz, and have yet to encounter any issues at my normal SPLs below 90dB. Also using Pluvia 7 for front heights and Alpair 6 for rear surrounds; if the basement room’s layout could accommodate a full 9.2.4 Atmos system I’d be all over that, but hey, first world problems, right?

[@Z-add]

Are their speakers specifically designed and tuned just for vocals?

[@DIY-AUDIO]

I reckon yes. Just google the type of music that you play most. I find these Full Range drivers are good for vocals and jazz, classical but if you are into heavy rock you may want different

[@theeprox]

If I may ask, why a front port than a back port in your DIY?

[@DIY-AUDIO]

Hi Robert, this was a build plan specific for the Markaudio drivers.

[@sonhouse9636]

Beautiful ! You're a great Diyer!

[@DIY-AUDIO]

Thanks

[@cupidstunt22]

The drivers look lost in the cabinets but the specs stack up

[@DIY-AUDIO]

👍

[@TheManoj300]

What's that classical music piece please?

[@DIY-AUDIO]

Which bit? There are several during the build

[@Z-add]

What is the reason behind just one driver?

[@DIY-AUDIO]

Lower power but controls the full range of frequencies. Google your question, lots of people for and against.!!

[@jaypatel6801]

Is rhe bass of tl any good

[@DIY-AUDIO]

Bass is great for a 4" driver

[@jericlee1509]

pluvia vs ch70.. whats your opinion sir?

[@DIY-AUDIO]

Personally prefer the Pluvia

[@jericlee1509]

@@DIY-AUDIO thank you, hope you could review latest alpair :), merry xmas sir

[@TheRattleSnake3145]

Isnt that just a slot ported box?

[@DIY-AUDIO]

Just followed the build plan! (in the description)

[@DidiotLawz]

How is this a T.line ? It looks like a regular ported box.

[@DIY-AUDIO]

? Compact TL

[@DidiotLawz]

⁠@@DIY-AUDIO. I guess it could be a t-line I’m just use to t-lines as using the port as the enclosure like a 1/4 wave t-line that’s tuned to the f.s of the sub/speaker

[@higersila]

I put "-" for the phase inverter. foam rubber spoils everything . manufacturing at a height.

[@DIY-AUDIO]

👍

[@nagyandras8857]

Tl my rear end. Thats a very low tuned bass reflex.

[@DIY-AUDIO]

😂

[@user-zk2hl9ib9u]

ВОПРОС ИЗ РОССИИ МОЖНО?НЕ СОВСЕМ ПОНИМАЮ 1)КАК МОЖЕТ ХОРОШО ИГРАТЬ МАЛЕНЬКИЙ ШИРОКОПОЛОСНЫЙ ДИНАМИК? 2)КОНСТРУКЦИЯ ФАЗОИНВЕРТОРА ОЧЕНЬ СПОРНАЯ-ТАКАЯ БЫЛА ТОЛЬКО У TANNOY 3)ПОЧЕМУ ВЫ ЗВУК ИЗМЕРЯЕТЕ ДИКТОФОНОМ ТASCAM -А НЕ ИЗМЕРИТЕЛЬНЫМ МИКРОФОНОМ?

[@DIY-AUDIO]

Because I don't have a calibrated microphone! The build is on the Markaudio website. Just check it out.

[@Thirteen..]

'Audiophile' term must be used for the music genre or for the speaker management, not for men.

[@DIY-AUDIO]

.

[@SS-ok6li]

Porfect 👍

[@DIY-AUDIO]

👍

[@lazzer408]

That's a ported enclosure not a transmission line.

[@DIY-AUDIO]

There could be an argument either way😂😂

[@lazzer408]

@@DIY-AUDIO No argument. It's a ported enclosure.

[@user-cq4wk5bu1h]

man dämmt kein Reflexkanal

[@DIY-AUDIO]

Its not really that blocked!!

[@user-cq4wk5bu1h]

No, cotton wool simulates space (volume) and the path becomes longer. You use cotton wool when the housing is closed to simulate (increase) the volume, so you have a larger volume and you also insulate.. But never reflexively.. If you want to do that, just put the back of the speaker against the wall. not more.. greets@@DIY-AUDIO

[@user-cq4wk5bu1h]

Check it out and hear the difference@@DIY-AUDIO

[@user-vi7jt5ou3v]

Сначало вырезать детали,потом досконально отфрезеровать,засверлить отверстия,продуть,собрать,оклейка шпоном,финальная сборка. Только так а не как в видео. Ибо столько трухи и опилок попало внутрь что нормального звука не жди.

[@DIY-AUDIO]

Thanks. I use a powerful vacuum to suck out any dust with an airline blowing through the other way.

[@user-vi7jt5ou3v]

@@DIY-AUDIO You can't collect everything and blow it out. Plus the already glued noise absorber. I myself periodically make columns and communicate with people who do it professionally.Therefore, I point out that it will interfere with normal sound.

[@ricocasilli3307]

Very nice build, But that's not a transmission line its technically ported.

[@DIY-AUDIO]

Thanks for your opinion. Built as said on the Markaudio website!

[@BrianBolhofner]

@ricocasilli3307 how many more 180 degree turns inside the cabinet volume does it need before it counts as transmission line instead of ported with extra turns in the airflow path? Is a sealed box just a ported box with the port covered 🤔?

[@utubecomment21]

That's not a t-line, it's a BR with an overly complicated port!

[@DIY-AUDIO]

👍

[@7852Thomas]

bx9j v​@@DIY-AUDIO7😂⅞xf

[@hanafiproject5439]

Clarity

[@DIY-AUDIO]

👍

[@user-uw4et2le8c]

ничего особенного.....

[@DIY-AUDIO]

😩😩

[@michaelmcintyre9179]

impressed with your video . q... your awl , very handy tool , it almost looks like its spring loaded , normally you need to apply force to create a starter hole. out of query what do you think of Sibelius speakers . also using a Mark audio driver , but prefinished in oak , you have the necessary equipment to make your self . but a lot don't i believe they charge about 4500 euros (10,000 Canadian , do you find that a bit pricey thx

[@DIY-AUDIO]

Awl, guess you mean the centre punch? If so, yes it's spring loaded. (Cheap on ebay or Amazon) Regards to the Sibelius, yes they do appear expensive but they are completely hand made out of solid wood and I guess with that in mind and the research in design etc it's reflected in the price. Compared to some speakers in the 10's or 100's thousands they represent good value to some and do look clvery classic! Personally though I'll never be able to afford them and will be attempting my own version later this year.

[@michaelmcintyre9179]

@@DIY-AUDIO thx , i,m sure you will do well