Speaker Building Roller-Coaster featuring AliExpress

DIY bookshelf speakers using a 5" bass driver from AliExpress. Both speakers (bass driver and tweeter) are Aiyima and bought from AliExpress.
If you want to learn about DIY Audio : audiojudgement...
Speaker plans can be found here: audiojudgement...

[@supes323]

They sound really good. Slightly bright for my liking but overall a good accomplishment. 👏🏻

[@hellhound59]

Either nothing at all, or you have a limited time to live. Love it! The doctor has spoken.

[@SignorZukini]

Love your channel and online courses! For something different it would be great to see a video featuring an open baffle build.

[@civilcitizen3586]

LOVE your videos !!!! I've learned more from your several videos than I have watching hundreds of others; I think it has to do with the way you explain the topics where a Newbee can understand... I can't wait till you put together a high-level 3-way design of speakers like the elfton ringos, but with a more affordable woofer like say the Dayton Signature Series 10" 4 Ohm for a bass driver; I would really be interested in following your lead on those. You are Appreciated!

[@emmet7208]

Flush mount the drivers, add more stuffing, get the drivers closer together on the baffle, off set the tweeter to one side slightly, round over the inside of the woofer hole and get lower profile screws on that tweeter.

[@Krack2805]

why closer together on baffle?

[@emmet7208]

To better time align the drivers when off-axis. A concentric driver unit images especially well because the tweeter is in the center of the woofer, it creates a "point source", anything you can do to get drivers closer together on a baffle is going to help not hinder the design.@@Krack2805

[@HornWorm8]

@@Krack2805 The distance between a tweeter and mid/bass should be within one wavelength at the crossover point. This is from AI... The center-to-center distance between a tweeter and a midrange driver is crucial for several reasons, all related to the way sound waves interact and how our ears perceive sound: Phase Coherence: Minimized Phase Issues: When drivers are close together, the sound waves they produce are more likely to reach the listener at the same time. This minimizes phase differences that can cause comb filtering, where certain frequencies get amplified or canceled out, leading to an uneven frequency response. Crossover Integration: Seamless Crossover Transition: The crossover region, where both drivers are producing sound at similar frequencies, benefits from drivers being close together. This helps ensure a smooth transition and consistent sound character across the crossover frequency. Imaging and Soundstage: Improved Imaging: Closer driver spacing helps maintain a coherent sound image, as the sound from both drivers appears to come from a single point source rather than two separate locations. This improves the stereo imaging and the overall soundstage, making the listening experience more realistic. Off-Axis Response: Better Off-Axis Performance: When drivers are farther apart, their sound waves can interfere with each other more significantly off-axis (to the side of the main listening position). This can lead to a less uniform sound field and a narrower sweet spot. Closer drivers provide a more consistent sound quality over a wider listening area. Minimizing Lobing: Reduced Lobing Effects: Lobing refers to the pattern of constructive and destructive interference that occurs when two sound sources are not aligned properly. Closer spacing helps minimize lobing, ensuring a more even dispersion of sound across the listening area. The further away the tweeter is from the mid/bass driver the worst the sound. Put them as close together as is possible.

[@impuls60]

A few tips about driver placement. Move the tweeter down to the 5" for better vertical off axis measurements and taller soundstage. Also having drivers in the end of a box feeds standing waves inside the box. To get rid of those I think the dampening should be 1/4 of the wavelength so is better not to make them in the first place. I'd move the driver up to about the 1/3 or preferable in the middle of the baffle if possible. No one distance in the internal box volume should be at the same length or you will make one big standing wave. Often noticeable as thick ssss(sibiliance). The tweeter needs to be flushmounted or else you get a mediocre response. If you dont bother doing this you might as well just buy a 100usd speaker and not waste your time. To many new vids on YT carries the knowledge ceiling from 10 years ago, lets move forwards to 2023 where we now know how to model speakers very well.

[@breh9320]

Where can i learn about speaker building? Any courses or youtube channels i can look out for?

[@HornWorm8]

@@breh9320 Toid DIY

[@blairboyle2476]

Nice I have a AS-2000 pretty old school but love it

[@stebennett3453]

Nice AMP. I love my Yamaha A-S501

[@maxvaly7747]

The woofer is mounted at an equal distance from the 3 walls of the cabinet, this could be the reason you have that distortion.

[@PauloHirth]

Excelente resultado!

[@criven3128]

AAAAH MARIUS POSTED HELL YEAH

[@joshiboshi6140]

Can u make a video about how you measure the speakers (SPL)? I am new to speaker building and not sure how much power/ what level to measure. Recently I used my dats as an amp for measuring. Is that a useable measurement? Would be nice to get some help here… 😅

[@Clobercow1]

Curious if you care about directivity, at all, in your speaker builds?

[@AudioJudgement]

I do make sure the speakers are phase aligned and there is big null at the crossover frequency if you reverse the polarity of one speaker. That usually fixes many directivity problems. I don't really do off-axis measurements, even though I should pay more attention to them.

[@jacktough]

What was your impression of these speakers (specifically the tweeter) off-axis? Tyvm

[@nikleiser5888]

Would you mind posting the TSP Parameter of all these speakers ? The speakers are not even listed on the Aiyima Website, weird ! Cheers Nik

[@AudioJudgement]

Check the previous video. You'll find all the measurements there

[@nikleiser5888]

Cool. You you always provide TSP Measuremnets ? @@AudioJudgement

[@ghicicines]

​@@AudioJudgement din ce oras esti?

[@aus-reviews8462]

way too much money for aliexpress drivers but awesome video

[@brianmack6285]

"... or you have a limited time to live. " +1 😂 Although you eventually arrived at a simple x-over for this speaker, what's your opinion on using a DSP and multiple amp channels to tryout active x-over configurations for frequencies and slopes, eventually translating the winner back into a passive network ? Or would the interplay of passive components and driver impedance make such an exercise worthless?

[@AudioJudgement]

In my opinion active is superior but it’s more expensive, you need extra space to put your extra equipment. Also, some don’t like the hassle to make all the necessary settings of an active setup. Some prefer the simplicity of a passive setup.

[@iainsolly2575]

Hi How do you cut your MDF? The cuts look very precise! Thanks

[@AudioJudgement]

I buy the panels cut to size from a furniture company

[@300ZCorradoVR6Z]

Why didn't you flush mount the drivers, especially the tweeter?

[@scellysspeakers]

Dunno if this is just a myth but flush mounting the drivers might improve the sound in terms of diffraction

[@HornWorm8]

Tweeter diffraction from a non-flush tweeter can be measured as tiny wiggles in the response. But there is no evidence at all that this can be heard by the human ear. Many have tried to decern the difference and have failed.

[@csj9619]

Wow, for the cost of that midwoofer, there are plenty of drivers that would stomp it, the Dayton Reference (paper-coned version), for example. *RS180-8P I think is the model

[@JasonsLabVideos]

Dayton is garbage..

[@ioannisloungos9489]

Wow! Nice bass (even thought that post for me needs to get lower!!!) .but tell us how you made to have this stereophonic ambience in 8:15 with only one speaker!!!! Also as already told by someone upper your distance of the tweeter is way big! I know that you know but also as you put them flushed with the bafle all the issued status is gonna dicrease significantly!

[@ioannisloungos9489]

Also about bolts (or scrues or whatever) the reason that exceed on its not big big deal i will not start wavelength and angles to made understood but it feally minor issue! Btw all your content is super and helpfull afterall!!! Greetings from Greece.

[@AudioJudgement]

The recording is made with a mono mic. Basically the recording is made o one channel and copied to the other channel.

[@ioannisloungos9489]

You know i had some reverb on acoustic that eas in diff between channels but nevermind! Keep givig us goid content as you do!

[@YetAnotherElectronicsChannel]

Salutare din Germania!

[@Vishnuvkammath]

I purchased Infinity alpha 121 W 12inch sub. Pls suggest me a suitable box volume (ported) Fs 33hz Vas 68L Qts .85 Qes .97 4 ohms Qms 7.1 It is a car sub. But I want to convert it for home purpose. User manual suggusts 45 ltr box with 3 inch port tuned for 36hz. I am not satisfied with that box volume. Pls help Does it work well with 45 L box? RMS 250 Watts Peak power 1800W.

[@Vishnuvkammath]

I am actually trying to set up 2.1 channels with a 3 way crossover boxes. For that Left and Right 8inch base drivers also purchased with low Qts .45. 60watts each.

[@emmet7208]

That driver will sound best in a sealed enclosure.

[@Vishnuvkammath]

@@emmet7208 defenitly I will go for a closed box. Pls advise me on my first comment aswell it will be helpful. I purchased car sub for home. Owners manual suggusts 45 ltrs box volume softwares don't work for me because qts is higher. myselft feel 45Ltre is very low for this sub.