Building an Omni-directional 3-Way Bookshelf Speaker - by SoundBlab
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- เผยแพร่เมื่อ 25 พ.ย. 2020
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This 3-Way Stereo speaker set was designed around a Peerless 5-1/4 inch woofer, a Dayton Audio 4 inch Full Range driver and a 1 inch Dayton Audio Soft Dome tweeter in a rear slot ported bass reflex enclosure. The tweeter has a reflective lens in the form of a ball to make it omni-directional and fires upwards.
The goal was to have a relatively small 3-way speaker that can provide a real sense of scale with great soundstage, imaging and presence. These do not disappoint and will outperform anything you can find off the shelf for the same price as building these yourself in my opinion. We recommend that you use an amplifier that can handle a 4 to 8 Ohm load and is rated to produce at least 25 Watts per channel.
BUILD PLAN: soundblab.net/build-plans/ , www.etsy.com/shop/SoundBlab
PARTS & TOOLS used in this build:
2.5m (7 foot) of speaker wire (14 AWG) - (US) parts-express.sjv.io/e4yRJz , (EU) bit.ly/39erRI4
Pair of Terminal Cups - (US) parts-express.sjv.io/n1rn3R , (EU) bit.ly/2ZWcXDM
Dayton Audio RS100-8 4" Reference Full-Range Driver - (US) parts-express.sjv.io/AoxKOK , (EU) bit.ly/3q6oCIS
Dayton Audio ND25FA-4 1" Soft Dome Neodymium Tweeter - (US) parts-express.sjv.io/jWx13M , (EU) bit.ly/2JbGocG
Peerless by Tymphany SDS-135F25CP02-04 5-1/4" Paper Cone Woofer - (US) parts-express.sjv.io/Xx01aG , (EU) bit.ly/3m9vJ0G
850W Cordless Handheld Electric trim Router For Makita 18V Battery - www.banggood.com/custlink/333...
Parts Express #6 x 3/4" Deep Thread Pan Head Screws Black - parts-express.sjv.io/BXmK3B
50mm Fortsner Bit - amzn.to/2DZqJb5
Measuring tape - amzn.to/2gQP7jo
Wood glue - amzn.to/2zlypPT
Masking tape - amzn.to/2yyn8yl
Woodworking Square - amzn.to/2x52C4V
Drill Bits - amzn.to/2hOSS8O
Hot glue gun - amzn.to/2kZo4qs
Screwdrivers - amzn.to/2xPTkcM
Straight Cut Router Bit 1/4 inch and/or 1/2 inch - amzn.to/2E59zFX , amzn.to/2teGq8s
Flush Trim Router Bit 3/8 inch - amzn.to/2I3uLDA
Router Circle Cutting Jig - amzn.to/2Ifx3KO
Orbital sander - amzn.to/2zljy7Y
Finishing sander - amzn.to/2zljUeO
Wire Strippers and Crimping Tool - amzn.to/2hPV6EH
Wire Snips - amzn.to/2zkGh44
Soldering Iron and Solder - amzn.to/2yydWd2
Center Punch - amzn.to/37bo63h
Utility Knife - amzn.to/2l0v3zl
1/2 Inch Shank 3/4 inch Round Over Router Bit - www.banggood.com/custlink/vmD...
Polyester Batting - amzn.to/2GAUKjI
8mm or 5/16 inch Round Aluminium Rod - amzn.to/2V0SfwG
Glow in The Dark Acrylic Juggling Ball - 76mm - amzn.to/3m6ixtv
45 degree Chamfer Router Bit with 1/4" Shank - amzn.to/367fM5u
8mm or 5/16 inch Fortsner or Brad Point Drill Bit - amzn.to/3nSSQwI , amzn.to/3q2B5Nz
SUPPORT THE CHANNEL:
- SoundBlab Website and Build Plans - www.soundblab.net
- Patreon - / soundblab
- TH-cam Membership: / @soundblab
FOLLOW THE CHANNEL:
- TH-cam - goo.gl/EWMSXV
- Instagram: / soundblab
- Pinterest: / soundblab
- Twitter: / soundblabs
CHECK OUT MY AMAZON SHOP for recommended gear, tools, etc.:
- www.amazon.com/shop/soundblab
Audio Components & Solutions:
- Parts Express (US) - parts-express.sjv.io/yRNVk2
- Soundimports (EU) - bit.ly/3B0xWEn
- Axiomedia (EU) - bit.ly/3TUQUoA
Get Whole house audio via ARYLIC:
- www.arylic.com?aff=9
Music:
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The BUILD PLANS for this project can be purchased here: soundblab.net/build-plans/ . It includes a comprehensive 29 page description of materials, parts, etc. on how to build these speakers from beginning to end.
Dear Soundblab, I enjoy watching your videos. You are a very good craftsman. I love the finish on these. Did you use automotive paint or a single pack enamel?
Have you done a 3-way speaker pair like this that is bi-amped? I have seen you put together a few, simple, crossover circuits, but not specifically a three way bi-amped set. I'd like to see your take on it.
Did you notice a 50hz noise when you talk?
As always another delight speaker project. The "omni..." of the highest freq. and taking into account TH-cam's audio limitations really works (using headphones). Mids & bass are quite good too. Thank you from a frustrated audio consultant.
Thanks
Very nice speaker. Excellent work. Thank for making this video!
Thank you 😊
@SoundBlab ohh the King is here! Love both of your videos. I get so much to learn from both of you.😁
The ball on the top looks so pretty, makes it look unique!
Thanks 😊
@@SoundBlab ^^
Wow! You build your own cross-over. Now, that's impressive!!!
Thanks
Excellent piece of work and these sound amazing. 👍👌
Thanks
love the idea with the tweeters. very nice
Thanks
Howzit. This is the first video of yours that I've watched and I became an instant fan after recognising the accent as local. Love the way you combine woodwork and audio - two of my favourite hobbies. Respect and admiration from Durban.
Thanks man!
Really man, its a therapy that works real well for me. I love woodworking and audio at the same time but with no skill and tools. Seing the fabrication to the the final product is really satisfying!!
Always nice and well hand crafted !
Thank you!
Cool concept! Love the jig you made to drill the hole in the ball. So meticulous!
Thank you very much!
Great idea and design!! Very unique concept indeed!! Very sensible in deriving the mids, highs and the lows from the speaker output delivered. I can imagine the discreet frequency from this "one" speaker itself. One needs to have an ear for this. Thanks Bro! Appreciate the design and your fabrication skills / technics at every stage of well explained video as well. Keep going 👍
Thank you very much!
I like tweeter placement 🔥🔥 .... Amazing 👍
If I want to build like this ....
I use rs125 sealed than .... Rs100....
Now I am building ... MTM with
RS150 series RS150 Sealed
RST28F tweeter .......... Amazing combination
Two Tang Band W6 for SUB
Excellent you are a master. Good soothing and clear output. Tweeter is performing to its fullest
Thank you very much!
Great DIY and awesome spacial sound achieved
Thank you! 😊
sounds amazing
Thanks
Huge fan off ur projects... beautiful work....with passion...
So goood..❤️
Thanks
Amazing look!!!!! And I think sound because your speaker are always good I think even if the sound test is not the most accurate way to see the quality, the only way it's to be in front of them but they seems to be more than good!! 👍
Thanks
They look and sound great!
Thanks 😊
@@SoundBlab sir ..... I think RS125 better than RS100 .... In nearly same price ...... ... Mid range on rs125 is better than rs100 .....
Why u not use in this project ?
Perfect crossover sir.
Thanks
they turned out pretty good, I bet they sound good too
Thanks! They do sound good 😌
From what I heard, they sound like they would make for good studio speakers. 👍
I think so!
Wow! These bulbs! ^^;)
It's amazing.
Thanks
Cool build!
Thanks!
Creative pair of speakers are very beautiful. I am seeing what you do and want to learn it to follow
Awesome, thank you!
i love the look! very nice.
Thank you!!
Well done Mate. Good sound too Congrats👍🍻
Thanks
beau travail bravo , enfin un diy de haute volée , vous pouvez etre fier de votre travail
Thanks
really I want to learn work from you sir,. wow it's awesome.... again i saying ur wrk is an art... hats off....
Thanks!
Thumbs up bro very intresting and clever design very beautifull outcome, sounds good too
Thank you very much!
Excellent work
Many thanks
Meticulous build as usual. Well done !
Glad you like it!
All I can say is Wow!! Excellent sound listening it via my Bluetooth earphone.
Thanks
wonderfull project!!!!!!
Thanks!
Thumbs up for using aircore inductors throughout as well as the Pollyanna caps. I wouldn't have gone with the sandcast resistor but still sounded good.
I've seen a similar design that put the mid driver on top of the cabinet as the 'omni' and the tweeter forward facing. What say you?
Выглядит обалденно))и сама идея тоже крутая!
Thanks!
Шикарно получилось 👍
Thanks!
You're genuis! 👍👍👍👍
Thanks
Thanks SoundBLab , Your Content And the quality is amazing . Can you video on tools you use to make speakers.
Thanks! I could do that at some point.
If you ever decide that you desperately want speakers in a piano black finish, then you definitely need to use some high-build automotive primer. Though you'll also want a proper paint sprayer since you'll need to apply anywhere from 5 to 8 coats of paint, or more, in order to get the appropriate depth and luster. Sand the surfaces flat to 200 grit using large sanding blocks, seal with a coat of sealant, sand gently to key the surface, spray with high build primer and sand the surfaces flat and even until you break through to the substrate, respray with high build primer and allow to dry before lightly spraying the surface with black (or any other color as you're just using this to find any high or low spots that you've missed and all of this paint should be removed), sand until all of the color is gone and you're left with a very flat and even surface that has no substrate peeking through (if you sand through again, then repeat this step), finally you can spray on at least two coats of color, sand the orange peel off and then progress through the grit up to 1500 grit (if you sand through the color to the primer then you'll need to add another coat or two of color before repeating the sanding process), then spray on your clear coat sanding between every two coats until you've applied a minimum of two to four coats of clear before (sand with 1000 grit and work up to 1500 grit), and finally you can move on to polishing using sandpaper up to 3000 grit before moving to polishing compound and a random orbital buffer. If you want more depth then add more coats of clear before polishing. Two coats will give you OEM automotive paint depth, four will give you good quality aftermarket paint depth, and six or more will give you the effect of reverse-painted glass. The reason you don't sand higher than 1500 grit between layers is because the paint, once cured, no longer chemically bonds the layers together and instead relies on mechanical bonding and needs some amount of surface texture in order to bond properly without peeling. Ideally, while sanding, you sand uniformly in one direction per grit and when you change the abrasive to move up one grit you will sand perpendicular to the previous direction and sand until all of the previous sanding marks have been completely eliminated. This will provide the best results without any deep scratches or swirls that polishing cannot eliminate.
There's a reason why most DIY speaker builders don't bother trying to get a proper "piano black" finish on their cabinets. It's a pain and it takes way too much time. Maybe if you ever swing a collaboration project with Accuton or a similarly super-premium speaker company then it might be worthwhile. Some of the precepts of that finish can also be applied to veneer or solid wood if you want a properly glass-like finish on it. You wet the wood with water, alcohol, or mineral spirits to lift the grain, then you sand it down to around 800-grit before repeating this a second time, then you can stain it or seal it (staining works best with a poly or urethane stain that builds on the surface instead of soaking in directly) and sand it again if the grain still rises enough to be noticeable, then you move on to the clear coats using the same process as before. You can still get a glassy surface finish with visible wood grain texture within by skipping the wetting process and moving directly to stain or sealant and allowing the grain to rise and swell, but it'll require quite a lot of coats of clear to build up enough that you can sand it down flat and even without breaking through to the veneer. You'll also probably need to use a clear coat paint that allows wet-on-wet layering to avoid the orange peel influencing the clarity of the paint after repeated coats that couldn't be sanded flat without breaking through to the veneer. Basically, any surface finish that results in a glass-like surface quality is a pain and isn't worth the time for most people.
Very nice
Worry nice!! I would really like to see you do a dml project also!! Like you channel alot!. Keep up the good work!
Thanks. Always wanted to do a dml. Hopefully a project to come in future.
love it!
Thanks!
Fantastic
Thank you so much 😀
Superb wOrking sir 👏
Thanks 😊
nice work
Thanks!
Great video ! 👍 But can you explain how you calculate the shapes and volumes of the box?
Thanks. I have been doing a bit of an extended series for my Pateins on this speaker that explains this a bit better. But will at some point go into more detail here on YT as well.
I'm a few days late to party but these sound great I'm listening on crappie cellphone speaker ...must sound really good !!! 😊
Thanks
WOW man these look so clean! And, judging by how it sounds through my own speakers, they probably sound great too! Do you have an estimate what the pair has cost you in components and materials? Love that tweeter setup btw!
Thanks man! I would estimate that parts and materials would be around US$350 for the pair.
Amazing full range sound from such a small speaker. I have a couple of questions. How did you manage to keep all three drivers in phase? What is your sub crossover point? Was it not possible to front mount the tweeter and was it too bright? I'd love to make a set for not only stereo listening but for home theater use. That's why I asked about tweeter placement for center channel duties or any other similar designs that would blend in nicely. You can call me a patron as of today. Excellent work and informative video.
Chris
Thanks man, really appreciate the support! Phase was tricky, but it can mostly be resolved within the crossover. The sub runs without a crossover network, since it is on the side, we get some natural roll-off. I did not test front mounted tweeter, the intention was always to do it as a omni-tweeter. An omni tweeter would be a good test for a centre channel to see if it works. I think it could have great advantages especially for a wide dispersion.
Great result as usual!! Thank you for satisfying video! Could you please share what microfones you use for sound tests recording?! And by the way, are you going to proceed with transmission line!? ))
Thank you! I am using 2 Behringer ECM8000. Will definitely do another transmission line build. This time probably a 2-way design of some sort, but open to suggestions...
@@SoundBlab yes, 2 way tline
Caramba toop heim! 👏👏👏👏👏👏
Hi I appreciate if you could shows us to build cube crossover like Bose type
Another awesome build!!! Im in the process of building my first pair of speakers. What paint do you use and do you clear coat?
Thanks! I use mostly products from Rust-Oleum (the 2X Ultra Cover). For the primer I use a filler primer from Duplicolor. I do put a clear coat on, yes.
Have you tried the 12inch subs yet
As i have a high db setup and would like to see wat it could do in a box of yours
Grate video keep them coming
Not yet. Thanks
Where do you get that Duplicolor primer ? it's really difficult to get a smooth finish on MDF edges, even after a few coats of sanding sealer. Great design's , I've just subscribed. Thank you.
Thanks! I buy it online from a local shop here in South Africa, but think it should be available in other parts of the world. There are other brands too. Just search for a filler primer.
Another fine build and excellent sound! Can these be placed near the wall?
Thanks. Yes, about a feet away will be fine.
very good
Thanks
Amazing work!
Thanks a lot!
Nice
Thanks
Do not think the ball should be virtually touching the tweeters and I feel like it should be set forward a little bit maybe an inch forward.
nicely put together. What was the build time cutting materials gluing together
The ball is about 17mm form the tweeter. I tested a few scenarios and this gave the best FQ response curve. I built this over many weeks doing other work in between, so I am not quite sure of the total time. But I am sure someone with intermediate skills can build it over a couple of weekends. The finishing of the enclosures takes the longest, the rest is rather simple and quick.
Always nice to see you build speakers ^^
Thou you should get a pair of binaural microphones so we get a bit better audio samples. Still not perfect of course, but at least something more representative of what one would actually hear irl :)
Thanks man. Yeah, I would like to try the binaural setup. At the moment I am in the process of moving house, so my setup was not perfect when I was recording this. It is still a work in progress to get the quality up there.
Very interesting
Thanks
Se pueden utilizar como bocinas frontales para home cinema?
Certainly, yes.
How long have you had the makita battery compatible router for? It looks interesting, but I'm curious as to how it holds up in the long term.
Not very long. Have only used it in one project so far. But the overall quality seem good. I’m hoping it will last, but only time will tell.
I always use a nail gun, always shooting them in at angles to keep clamping force, and prevent parts coming apart, so I can work straight through without dry times.👍
That, I think, would be an issue if you're planning on rounding over all the edges.
Yeah, I normally do do that, but with the heavily rounded corners it was not posssible.
@@SoundBlab
Ah, in such a case you could set up to use wooden dowels
@Soundblab :
Is it possible to use a BULLET tweeter, or a ring radiator type tweeter, as an omnidirectional tweeter?
Also, does the ball vs the cone-type reflector make any difference?
I've not tried that yet so can't say for certain. The ball vs cone is another thing I have not tested yet, but what I am hoping with the ball is that you might get less diffraction issues that with the cone which has a sharp top edge.
Awesome work !!! Typo on the thumbnail ??
Ooops! Thanks for pointing it out 👍🏻
how much is this project to purchase
What are you painting on the enclosure after you did the round over edges? Sanding sealer?
Yes
What liquid did you apply right after rounding the edges on the router table? You didn't show it or added to the list in the description. Thank you,.
That's sanding sealer; frequently used with MDF to help give a more even finish for topcoats. Most hardware stores should have it stocked with their other wood finishes.
@@CygnusRising That's what I thought. Thanks for the follow up. Very nice job!!!
I'm working on an omi-directional speaker myself. And finding modelling the crossover with the upward firing tweeter a bit tricky due to phase and diffraction, I don't fully trust the simulations with the manufacturers frd and zma files in this case where drivers are pointing every which way. How do you get around this?
I measure the drivers myself in a test enclosure. Using manufacturer files will not give you accurate results.
@@SoundBlab Thanks for the response! Think I'll have to do this, I've modelled it best I can off the manufacturer data, but I think I'll do just that and build a mock enclosure to double check the results before buying crossover parts. Now all I have to do is wait a month for drivers to turn up xD
Nice build! Ever consider going active crossovers?
I might do something with MiniDSP someday, but true active crossovers is a bit more complex. Not sure I’m up for it just yet.
Can I use with amplifier without installing crossover board ??
No
I’m wondering how you design the crossover. You’re always building the crossovers without the speakers being finished. Do you make a prototype as well before making the video?
There are program that will tell you based on the design parameters on what the crossover should be not that hard really.
@@MichelLinschoten yes, but you have to build it first so that you can characterize it (measurements of the spatial response). Normally you'd have to finish the speakers first and then play around with the crossover. Usually it takes a few trials to get the right comprises. I don't see how he could have optimized the design unless there has been a prototype.
I normally build one enclosure without finishing the cabinet and then take my measurements from that.
Apologies, but I didn't quite make out what the software you use to model out the crossover.
XSim
Could you built a DIY Devialet Phantom with subwoofers that cancel out each others vibrations?
And maybe a portable speaker as well?
No Pressure tho! :)
That would make for a challenging and interesting project. Maybe I’ll pit iton my list for a future project at some point.
@@SoundBlab Great! :)
for sale?
How do you rate in sound pressure and quality of this vs your slimline 3 way
Please suggest eager to know
Pros cons frankky
These have a slightly higher sensitivity. In terms of sound quality both sound great, but the slimline has a lower bottom end in the bass.
Can you diy a studio monitor of flat sound for mixing and mastering of songs
Definitely a future project as some point, but it will be a passive design, not active.
Nice video very useful ..but brother please make a video on sub woofer circuit board making video.... That's video very helpful for beginners...❤️
Thanks. I did start a build like that, but put it a side for now since I ran into some issues with it. Might relook it at some point though.
@@SoundBlab brother please make speaker 🔊 cross over making video it's very useful for beginners ❤️
Would you consider a V shaped cone instead of a ball?
Yes. I used a ball here because it was easier to find than a cone, but would some day like to try a cone as well.
Why didn't we make all the fastener holes ect before we went to paint ???????
Sometimes I do , and other times I don't. These builds go quick, and no one is perfect 😉
Are the woofer speakers on the right side of all ..?
The side mounted woofers are on opposite faces.
Awesome build as always! Quick question, how did you work out how big/long etc the port in the box should be for the sub to function correctly?
Thanks. I used software called WinISD.
Very nice work..
By d way where are you from??
Thanks. I live in Cape Town, South Africa.
@@SoundBlab actually i am inspired by you and your channel and wants to build speaker like you made it .. though we are manufacturer of speaker enclosure..
Please share crossover components details. Also share product buy link
Crossover details will be in the build plan that you can purchase on my website at www.soundblab.net/build-plans/
@@SoundBlab i mean components name and capacity
If I put speakers on both sides, not just one, but both sides?
Yes, but the enclosure will double in size, the port will need to be adjusted and the crossover.
@@SoundBlab
I got it....
Thank u bro🙏💪😎
Zebronics 9400 pro 525w vs Sony HT-S20R 400w which is tha best bro please tell me
Sorry man, I don't have experience with any of these products.
didn't you forget to hf +3db?
Where did you get the glass ball?
It's an acrylic juggling ball. On Amazon.
Should do ab comparison with balls on and off
next time use plasma balls! ;o
very cool Speakers they remind of an Anglerfish
Thanks
Sir...iam in India..can I buy this..??
Bro ...... U are thinking to buy ..... Dayton Rx100-4 .......
Because I am confident confuse with performance .... Which really need tweeter
Maybe provide some light inside this sphere? =)
Like the idea!
Aha! Finally see your face in this one!
😉
Bro any new video coming ??? 😀😀
Soon 😉
@@SoundBlab which one 😊😁
👍👌❤❤❤❤❤
Box nya jual lah om
Imho the RS100 has a very small listening field so you need to point them directly to your ears. Why would you pair them with an omnidirectional tweeter? Makes no sense to me.
The Rs100s actually has pretty good off-axis response all the way up to 4000 to 5000Hz. Crossing over an omni-tweeter around that or before that FQ will thus make a good pairing and provide us with a more open sound in the top registers IMO.
👍👍👍👍👍
😎
Did you test this ? Measured it , im sure it measures like a mofo