Let's Talk About Making Mistakes || OB Speaker Build Follow Up
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- Опубликовано: 11 окт 2024
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COMPONENTS
Drivers - goo.gl/QqoWV7
Terminals - goo.gl/sxRuCN
Circle Jig - goo.gl/S1pNjH
Speaker Wire - goo.gl/LRROna
Amp - goo.gl/Xmchn7
Bluetooth Amp - goo.gl/PUysRO
Nasa Hat - amzn.to/2fDLqgu
Headphones - amzn.to/2fDoDBa
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ALL YOU NEED TO GET STARTED
Drill - amzn.to/2641yxs
Circular Saw - amzn.to/23iuCfx
Speed Square - amzn.to/23ivhgQ
TOOLS
Router - amzn.to/23isnJh
Router Table - amzn.to/28NaaHE
Router Adj. - amzn.to/1UUvwuY
Chamfer Bit - amzn.to/1UUvV0w
Mortise Bit - amzn.to/1ZYQ3An
Table Saw - amzn.to/28NdP8o
Miter Saw - amzn.to/1ZYQfQ9
Cordless Drill - amzn.to/2641DRD
Orbital Sander - amzn.to/1UUyU9n
Finishing Sander - amzn.to/1ZYSjrk
Bar Clamps - amzn.to/28Neoz0
Soldering Iron - amzn.to/28NedUs
3” Forstner Bit - amzn.to/1ZYS8fz
Forstner Bit Set - amzn.to/1Upcayn
Measuring Tape - amzn.to/1UUxpb4
Push Stick Pack - amzn.to/1XwjV8U
Auto Center Punch - amzn.to/2643yG3
Digital Angle Gauge - amzn.to/28Nc0Zb
Combination Square - amzn.to/1XwkhN3
CAMERA GEAR
Camera - amzn.to/1W5Pci8
Wide Lens - amzn.to/28NeQ0j
50mm Lens - amzn.to/1W5PR35
Microphone - amzn.to/1ZYU9II
Big Tripod - amzn.to/1ZYUv23
Flexible Tripod - amzn.to/1UUAwzX
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If you have any questions, comment!
I invite you to be apart of this awesome community.
Thank you so much for watching!
-Kirby
THATS WHAT IT MEANS "EXPERIMENTATION" we all learn always something about our mistakes. KEEP IT GOING KIRBY!
One of my favorite videos. Thanks for letting us learn from your mistakes. It takes courage and heart to share so openly. Keep up the good work.
Don't take the haters to heart. It is all too easy to act like a helmet, with internet anonymity.
Your open baffle build was a learning curve that allowed you to discover the intricacies of producing great sound.
With the knowledge you've gained, you can help us to avoid similar mistakes... Thank you for providing this information!
Takes a sane guy to admit he made a mistake and that he learned from it, I don’t know all the details but it sounds like some people were quite critical of your OB build. You turned it around well, however, I commend you for your response, keep up the experimenting and learning from your mistakes (hugs)
goodon you for admitting you made a mistake. Not many would admit they didnt research the build properly and wasted so much time and effort on a failed project. Hope you learn alot from this build and the next few builds really hit the mark we would expect from a professional custom speaker builder.
Goddammit!! I did enjoy your babbling! Immensly!!
Seriously though, great video man. I learn something every time I watch one of your videos, which is why I keep watching them.
Thanks for making them man.
I'm watching from japan.
Very interesting.
Its all about learning, and every mistake you learn from makes you better. Your woodwork is getting better with each build, your electronics knowledge will improve with each build as well. My advice is to join and learn from Audiophile groups, but don't let the general attitude perfect audio at any cost get to you. I wan't to start building speakers but, like you, audiophile quality isn't my main/only goal. I'm willing to take a hit on overall sound quality for something that is aesthetically superior (interesting materials) or has some sort of functional benefit (battery powered bluetooth) or budgetary reasons (I ask for what are the best cheap drivers for a build I only wanted to spend $50 on and they recommend $60 drivers.)
You still made them beautifully!
Hi Kirby, it might just look that way on video, but isn't that enclosure you built a bit large for a speaker with Qts=.33 and Vas=1qft ?
I'd have expected a very small box with a smaller diameter reflex opening.
If you want to experiment with OB builds, start with a small (6"), high-Qts speaker and mount that at about 5ft height in the middle of a room
with a tripod. Then add baffles in front of the speaker, start at 3x the speaker diameter and go up from there. Note that the Fb is always determined
by the distance between speaker and the edge of the baffle.
Simple rules: Baffle should not touch the ground, front must be perfectly flat, mount should be closest to the speaker.
There are examples for wave-guides or pocketed baffles to virtually enlarge the baffle. But thats Jedi level acoustics.
Great experiment though, keep going !
That's how we learn....
To be honest, I have some amazing solid Oak enclosures, but they are old, and they sound bad. I want to rebuild, so I watch your videos, and try to learn...
Now I'm sure when I choose the components, and actually do it, I will learn a lot, and probably have to redo it again, before they sound good....
So, I like it, that you tried, and failed, and learned more.... That's how we all get smarter....
Thank you for sharing your failure and mistake. This is very interresting and valuable
When will you be sending the plans for the Walnut bookshelf speakers? I pre-ordered those back in May.
The parts express design forum has a wealth of information and many successful speaker designs.
5 mins reading of wiki can prevent many mistakes)
FYI, there is another type of enclosure you can use for high Qts high-sensitivity speakers. It is something between SB and OB. Take SB, make holes (~5-8 mm, ~10 mm step) with a drill in the back wall of the box. Depending on speaker, you have to cover the whole back side or just a part of it. The optimal variant is a half. Then apply a dense fabric on the inner side of the drilled part. These manipulations create acoustic resistance for the back wave. This type of box allows to smooth out the frequency response, remove the peaks, lower the bass limit and make the speaker less dependable from the positioning.
Yes that's right. In German it's called "kontrolliert undicht" = "controlled leaky" but this type of enclosure is "just a crutch", as I'd translate the German saying I'd use, because it works but it's not the best solution.
Not the best, but it allows to reduce the size of the front wall. The proper OB should be much bigger in size than that in the video.
You also need to take into account the wavelenght of the lowest bass you want to support to determine the size of the baffle. If the baffle is too small the bass frequencies will just wrap around your baffle and cancel themselves out. That's why you often see these huge baffles in OB speaker builds.
Great video, Kirby. Thanks for sharing!
Higher Qts is equal to resonant low frequencies.
So no! You didn't make a mistake, you should have just increased the baffle size. :)
How big
Yes, Thats the reason it sounds thin, Dayton Audio PS180 Qts=0.33, if you have any drivers with higher QTS, maybe you can make another pair. nice video , keep it up !
Now the "Don't build these" in the last video title makes sense....Glad you gave an explanation as to why it didn't work.
Hi do you use any programs to design or help you determine the enclosure size, do you have any guidance from any book or site? if you do i would really like to know!
You needed a larger baffle to lower the combing effects from the frequency response
Waited for a long time! Hope you upload video more often. Like it a lot tho!
Hey Kirby, I really appreciate for your nice videos, so far I've learned lots of stuff from you thanks
I have got a question about impedance. I'm not sure how strong ohms(2,4,8 even 16) do I need to aim it when I build a speakers.
Lets say for 2 way speaker, if woofer driver got 4 ohms but 2 ohms for tweeter, which impedance should I match to get best result? Thanks again!
I have a crazy Idea for you to try I did something like this when I was a teen I added a small length of tube to the back I had 6.5 inch drivers and was experimenting with open driver type set ups just by adding a section of tube to the back same size as the speakers and about 5 in long I got decent bass response !!!! you might want to try it if you experiment anymore with open baffles cool vid my first car system was open baffle in my hatch back out of foam board using 10in drivers from a console stereo it worked very well considering I only had a 40 watt booster to push them !!
Always learning
do you have a measurement rig? or a box building software? the guys are emerald physics apparently make some top notch 'quipment. the looks of 'em are spot on
Great vid, good experiment, I learned a lot to.
I understand the problems with drivers and boxes so i had to give it a go. I came to the conclusion cars are leaky and a crap environment so I grabbed some old car speakers, mounted off center and with a bit of equalization for the lack of efficiency I was quite happy, not perfect. I have them 1 mtr from the rear wall in a room 15 mtr long. Later added the rear facing Motorola tweeters which are wired in phase with the REAR of the cone of the car speaker, not the front. I did not use a crossover and use a Yamaha equalizer and Technics 25 + 25 amplifier. I should put on RUclips.
I love u kirby
Hey Kirby. Remember to engage with your audience in ways other than your videos. I sent you an email maybe a month ago and haven't gotten a response. I see lots of people commenting on your videos, asking questions (even about things they've purchased from you,) with no apparent response from your end. Same thing on your Facebook. Maybe you're responding to people in a way that's not super visible to my casual inspection. If so, sweet.
Your content is GREAT. Just remember to take some time to communicate with your people.
Literally just sent an email looking for the plans that I "Pre Ordered" 9 months ago.
Open baffle is difficult, you got to have huge front plates and they are very sensible to the room.
But if you can manage that, you got great speakers with a lot of detail and a great soundstage
I so much want you to take your building and channel to great hights, in both sound quality and build. I dont understand with the gear you have why the boxes are showing gaps in the joins and glue on the back, we can see this, it lets you down. However your shows are great and your presentation very good. I just want to see bigger and more refined builds and maybe drivers that aren't parts express... See how far you can take it. The cnc video looks awesome. That paired with better build, drivers and crossovers... That would be brilliant.
You could make your box much stronger if you added finishing nails to the joints. It would mean that you could not just tap it apart with a hammer. I would drive the nails at an angle to avoid issues with the end grain (which does not hold well). I would also still glue it,
excellent! xx
Read John kreskovsky work. You can make any Qts speaker work as long as it meets VSP requirements and you are able to equalise
I've built a few open baffle speakers, its the driver that makes the difference, some sound great, some, no
I need that NASA hat.
Are you planning to sell these?
Don't dismiss all drivers with a low Qts. Many will work very well.
Could add a sub!
How do you find the qts of a speaker? I looked around on parts express and could not find it for the driver I'm looking at.
Mistakes can be our best teachers. The story about the guy that developed WD-40 says he failed 39 times before success. Mistakes can be really successful teachers in acquiring insight and knowledge. Experiments involve much thought, trial and error, observations, and conclusions and even if the outcome of the experiment is different from our original expectations does that mean a mistake was a failure or a success?
Happy Holidays!
HELLO KIRBY, ITS A BETTER SOUN WITH A ENCLOSURE,,, OR ARE THE SAME SOUND WHITOUD ENCLOSURE AND OPEN BAFFLE....SORRY FOR MY BAD ENGLISH....
Horn speakers?
It’s not as simple as “biggest baffle possible” ... google / and read papers on open baffle .. LInkwitz has good articles on it.
With woofers that small having "nothing behind" the baffle is the problem.
Here's a few open baffle speaker projects for you to try:
www.wildburroaudio.com/
www.quarter-wave.com/Project12/Project12.html
www.quarter-wave.com/Project08/Jordan.pdf
www.audiocircle.com/index.php?board=90.0
Liked
You built them like a box baffle board which is too small. It needs to be wider than twice the diameter
Hey Kirby, I sent you a important message on patreon regarding that you're voiding their guidelines, and what exactly, as I don't want your patreon to be blocked
arrrrgh! don't drag it around like that you're gonna scrape its paint.
Search for Saba Greencone
it's a line, not a microphone
It took me 38 years to finally hear what I thought was good before (boxed/ported speakers) and then be proven wrong. OB subs and OB speakers sound phenomenal done properly. If you want the cymbals and drums to sound like they are there in the room then OB is the way togo.