My DIY projects "J&N"

Georgi Tsvetkov

New member
Nov 13, 2019
7
2
3
60
Sofia Bulgaria
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 2? 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.
Have are some pictures, if there is interest, i will continue.
Regards!
 

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Georgi Tsvetkov

New member
Nov 13, 2019
7
2
3
60
Sofia Bulgaria
I see that I have 330 visits to my post, so I will present to you the story of the design and production of these speakers.
In order to save your time, I will allow myself a clarification:
-Everything in this project- idea, design the filters and the overall workmanship of the cabinets to the last detail was done by my hands.I didn't use a "CNC" machine and 3D program.
“J&N”- front speakers and center -step by step;
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;1578055555634.png
1578055555634.png1578055627654.png1578055627654.png
1578055682000.png
On these matrices I bended 8 layers of 4mm MDF. The adhesives I've used will be discussed at a later stage;
1578055804000.png1578055804000.png
1578056421288.png1578056421288.png
1578055855340.png1578055855340.png
The filters are positioned in this way;
1578056045486.png
1578056159204.png1578056045486.png1578056159204.png
My initial idea was, for a bass speaker 6.5 ", but once I assembled the pilot model and measured the internal volume of the cabinet, found that I had enough reserve even for a 10" speaker. I decided at this stage to use 8.5 ". This is the first option;
1578056279180.png1578056279180.png
1578056316274.png1578056316274.png
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.
to be continued;
 

Steve White

New member
Jul 6, 2018
22
4
3
Fort Worth, Texas
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 2? 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.
Have are some pictures, if there is interest, i will continue.
Regards!
Beautiful work.
 

Aaron Hackett

New member
Mar 1, 2020
1
0
1
41
Portland, OR
I see that I have 330 visits to my post, so I will present to you the story of the design and production of these speakers.
In order to save your time, I will allow myself a clarification:
-Everything in this project- idea, design the filters and the overall workmanship of the cabinets to the last detail was done by my hands.I didn't use a "CNC" machine and 3D program.
“J&N”- front speakers and center -step by step;
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;View attachment 209052
View attachment 209052View attachment 209053View attachment 209053
View attachment 209054
On these matrices I bended 8 layers of 4mm MDF. The adhesives I've used will be discussed at a later stage;
View attachment 209055View attachment 209055
View attachment 209062View attachment 209062
View attachment 209056View attachment 209056
The filters are positioned in this way;
View attachment 209057
View attachment 209059View attachment 209057View attachment 209059
My initial idea was, for a bass speaker 6.5 ", but once I assembled the pilot model and measured the internal volume of the cabinet, found that I had enough reserve even for a 10" speaker. I decided at this stage to use 8.5 ". This is the first option;
View attachment 209060View attachment 209060
View attachment 209061View attachment 209061
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.
to be continued;
This is wonderful craftsmanship! Great job. Side note; my wife is from Veliko Tarnovo. We will be visiting this summer for the first time in 20 years!
 

Georgi Tsvetkov

New member
Nov 13, 2019
7
2
3
60
Sofia Bulgaria
[QUOTE
This is wonderful craftsmanship! Great job. Side note; my wife is from Veliko Tarnovo. We will be visiting this summer for the first time in 20 years!
[/QUOTE]
Thanks, Aaron!
PS
I'll write to you in private.