Author Topic: My DIY speakers "J&N"  (Read 2823 times)

Offline jororaitchev

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My DIY speakers "J&N"
« on: September 21, 2019, 21:23 »
Hello,
A model of my DIY loudspeakers i have served Ti6k- JBL. My first contact with
them, was in distant 2005.
I started working with them in 2009 and finished in 2012.
The loudspeakers are "SEAS"- Excel / Tw-1”, Mw-5”for center 2х 5.5”,Bass-8,5”/ and cross-over parts- "Intertechnik".

Nominal impedance- 8 OhFreguency Range 30Hz-20kHzCharacterstic Sensitivity(2,83V/1m)- 87db
Long Term-110W.
Here are a pictur, if there is interest i will continue.
Joro



Offline wizardofoz

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Re: My DIY speakers "J&N"
« Reply #1 on: September 21, 2019, 22:50 »
Always interesting to see others Diy efforts
I have a pile of stuff that pushes out squiggly waveforms from smaller squiggly waveforms that sometimes come from 1's and 0's.
It's wonderful to behold as long as you don't let the magic smoke out.

Life is short! Enjoy the music while it plays, when it stops, there might be a chair for you...or  maybe not.

Online petetherock

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Re: My DIY speakers "J&N"
« Reply #2 on: September 22, 2019, 07:57 »
Lovely woodwork 👍
Please post instead of sending a pm, so more can learn.

My gear:
https://peteswrite.blogspot.com/2020/02/my-setup-22020.html

Online synthesis

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Re: My DIY speakers "J&N"
« Reply #3 on: September 22, 2019, 11:02 »
Awesome looking speakers!! Cabinet building must take hell lots of works

Offline audiokit

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Re: My DIY speakers "J&N"
« Reply #4 on: September 22, 2019, 11:51 »
+1

Love those SEAS Drivers...


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Offline joamonte

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Re: My DIY speakers "J&N"
« Reply #5 on: September 25, 2019, 00:38 »
How did you make those curve surface by DIY ? Curious

Offline ronildoq

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Re: My DIY speakers "J&N"
« Reply #6 on: September 27, 2019, 19:30 »
Wow! That’s a beauty ! Congrats! Nice

Offline wechnivag

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Re: My DIY speakers "J&N"
« Reply #7 on: September 27, 2019, 20:47 »
Wow, 99/10!! That is amazing work. Well done!

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Offline jororaitchev

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Re: My DIY speakers "J&N"
« Reply #8 on: September 27, 2019, 22:51 »
Thank you all, for the good evaluation of my work!
In order to save Your time, I will allow myself a clarification:
-Everything in this project-idea, design filters the overall workmanship of the cabinets to the last detail was done by my hands.
Thanks,
Joro
I'll show you, how I made these speakers,  supported with  photos and  with detailed information  as possible. This project is a long time ago and  some of the stages during their construction  , I can not show them - I do not have the necessary material, but what is available, I suppose  will be enough to provoke your interest.
At first, I had to figure out how to bend MDF plates. In the internet now has a very detailed material on how this process is being carried out with complicated  multi-operative press  mashine, but 2009  this information was scarce and irrelevant to me because,  its clear  I can not make a similar device at home.
For this purpose,  I made this "Home Matrix" for the center and front speakers;


And for the front speakers;
https://scontent.fsof9-1.fna.fbcdn.net/v/t1.0-9/p720x720/36616234_625506941155404_6571884413439705088_o.jpg?_nc_cat=103&_nc_oc=AQmG7OVMcnQZFZJMikhQiTo-3nyYGOGqIhYqTkR_Tjs2H5EdvJ8YGXwiIpwVHp9FHmw&_nc_ht=scontent.fsof9-1.fna&oh=f72cb1d71b97b3956eb4cfff077ceae7&oe=5DEFE1BA,
On these matrices I bended 8 layers of 4mm MDF. The adhesives I've used will be discussed at a later stage;

https://scontent.fsof9-1.fna.fbcdn.net/v/t1.0-9/p720x720/36614441_626227504416681_6545860261700435968_o.jpg?_nc_cat=110&_nc_oc=AQmpn7LseFZfsGvRebupQVbLpktjNElzPzW1L_4Ex7G_0VMaQCuaLz8szd4MNu8TRX4&_nc_ht=scontent.fsof9-1.fna&oh=ad8b256db8377dbf1bc2a8ff4e113872&oe=5DFE540C
https://scontent.fsof9-1.fna.fbcdn.net/v/t1.0-9/p720x720/36611286_626228197749945_5398333571024814080_o.jpg?_nc_cat=110&_nc_oc=AQm3kxZ6TT1lJDjhlnz1H5fYgkHqpkX9fj3xWH8AH4COBPScNwp4eNWN9VDVoDtc1m8&_nc_ht=scontent.fsof9-1.fna&oh=50d3f5c20e0f3ef37af27d248c32056c&oe=5E369FD4
to be continued;

Offline wizardofoz

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Re: My DIY speakers "J&N"
« Reply #9 on: September 28, 2019, 02:33 »
Joro I am interested to know if you are based in Singapore where most of us here are, and if you built them here too?
I have a pile of stuff that pushes out squiggly waveforms from smaller squiggly waveforms that sometimes come from 1's and 0's.
It's wonderful to behold as long as you don't let the magic smoke out.

Life is short! Enjoy the music while it plays, when it stops, there might be a chair for you...or  maybe not.

Offline jororaitchev

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Re: My DIY speakers "J&N"
« Reply #10 on: September 28, 2019, 05:01 »
Joro I am interested to know if you are based in Singapore where most of us here are, and if you built them here too?
You can find the answer to your question in my profile.


Offline ed

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Re: My DIY speakers "J&N"
« Reply #12 on: September 30, 2019, 09:40 »
Awesome!

Offline jororaitchev

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Re: My DIY speakers "J&N"
« Reply #13 on: September 30, 2019, 20:22 »
Awesome!
Thank you, ed!

This is the first option- continued;
 
https://scontent.fsof9-1.fna.fbcdn.net/v/t1.0-9/p720x720/36711045_627314867641278_8682670095631122432_o.jpg?_nc_cat=107&_nc_oc=AQlJ9Cke4pe23jE6CCCsfHFP88RPhQd0qv8lcp-jdqKBl-RBn4TM-kxDILPkjjPfd2k&_nc_ht=scontent.fsof9-1.fna&oh=89282c5659299dfd8dfdd15f5c33112f&oe=5E3AE09B
And,  The final decision;
https://scontent.fsof9-1.fna.fbcdn.net/v/t1.0-9/p720x720/36729723_627317160974382_1000872756021035008_o.jpg?_nc_cat=104&_nc_oc=AQna0KarwXq9UUc9id4UCGXrBoxwXZamzejSZkudkfQK-08SLh5GxKgNrJV4_wNaCq4&_nc_ht=scontent.fsof9-1.fna&oh=4e44a707faf4e2d896f8317230679ee6&oe=5E24AF82
https://scontent.fsof9-1.fna.fbcdn.net/v/t1.0-9/p720x720/36700094_627319774307454_7538047966783733760_o.jpg?_nc_cat=109&_nc_oc=AQm1xu8gSnxj-9QcmHq_XR8y98fBh-eh5H19OLDriGm23wrQjCACaidi_AbqJdvSGWk&_nc_ht=scontent.fsof9-1.fna&oh=399f80a07b2b57a7a7a5bca71c0604fb&oe=5E38D4FD
The finish is 35-40 layers of acrylic high quality auto varnish and after each layer- polish.
The veneer I use in Bulgaria is known as "Birds of Maple", in  the world is also known as "Bird's eye" .  We reach the moment of very specific activity - veneering with natural veneer. When veneering panels, details is  in one plane, there are no problems. There is only  a requirement - the person who collects the individual pieces has good skills, the rest is completed by the pneumatic press.
When we talk about a complex shape, our immediate association is for   "Vacuum press", but there is a limit to the thickness / height / of the workpiece. If we are talking about veneering of a flat surface with motifs on the surface - it does work, but if it is another massive form dont.
Due to the complexity of the process, i will pay close attention to it. My technique is complex, risky on a large scale and I definitely do not recommend it to enthusiasts with little experience! A natural veneer can bend tangentially or radially, usually masters prefer to work in just one direction - for less headaches.In my method of processing, I use both bending directions simultaneously, but add a third diagonal bending.
The other main problem is  the adhesive with which it sticks the veneer, it is polychloroprene,  this glue does not allow you to move the veneer, once touched to the base there is no other chance-stays there. If you try to move it, you will break the veneer at the moment, and when we talk about "Birds of Maple" with a price over 40 EUR, the feeling it's not pleasant!
I will explain my technique for cutting veneer before gluing it.
 On the finished cabinet of the loudspeaker, from " India paper" / she is the closest with the veneer / I make  the  templates that should lie perfectly on the base. The problem is in the wrong shape, the veneer after gluing in one part, changes his  shape, although everything has previously been matched perfectly. It requires a lot of attention, patience, and proper judgment, which part should squeeze, otherwise balloon spaces are created, which are very difficult to correct without being visible later. Sometimes, depending on the type of veneer, moistening helps, but this action also requires judgment with experience.

Offline jororaitchev

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Re: My DIY speakers "J&N"
« Reply #14 on: January 24, 2020, 00:23 »
In fact, this is the final situation:


The rear speakers are waiting for their development.

 

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