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Thread: DIY JBL 4344 project

  1. #1
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    DIY JBL 4344 project

    Dear All,
    I'm Paul from the Netherlands and new on this forum.
    I started a JBL 4344 DIY project and at the moment collecting the original drivers from The Netherlands, Germany and Austria. It is going well.
    Next step is the cabinet.
    I tried to find plans for it but cannot find them, so I did one myself. A copy of a front view picture in AutoCad. See drawing.

    Now I like to ask enthusiast 4344 owners to help me with the measurements.
    I will make a new drawing for the baffle (front panel) only.
    What is the size of the front panel only (visible blue panel)?

    Txs, Paul
    Attached Images Attached Images  

  2. #2
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    Here are some links ( to a very slow server ) for large, detailed 4344 plans ( > 39M ) made by LHF member , ayaboh . ( Grab a coffee & wait .)

    http://www.designcut.com/4344/4344-Final.pdf

    http://www.designcut.com/4344/4344-Network.pdf

    http://www.designcut.com/4344/Foilcals.zip

    http://www.designcut.com/4344/Material-Layout.zip


  3. #3
    Senior Member Odd's Avatar
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    4344

    I have drawings. Send a pm with your e-mail.
    The file is too large for the forum.

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    Plans 4344

    Thanks Earl K and Odd; you referred to the same document.
    It is a really well and detailed DIY plan for a JBL speaker.
    But there is a but: he changed the design, the front look of the speaker.

    He balanced the three drivers in one line and placed the 2405 next to the MH.
    He also made the Foilcal bigger to match his 2405 frame. The two ducts are lowered.

    I think I like to stay with the original design.
    So with the information inside above mentioned document I can make the plan for the front view.
    I will post the drawing soon.

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    Original plan 4344

    This is the front view; combination of a scaled picture and the information in the document made by OS.
    Can somebody confirm the measurements?
    I do not have the size of the Foilcal and its position.
    Thanks, Paul Name:  130604 JBL 4344 original.jpg
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    Original and changed

    See difference original and design OS

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  7. #7
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    The one on the right is the one to build.

    The only thing I have to say with respect to the one on the left is "part it out". There are some good drivers to be had from that mess.

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    Senior Member Odd's Avatar
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    Installing Drivers on line has clear advantages.

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    Big one in the middle

    It looks like JBL initially put all the "big ones" down and in the middle. See 4343, 4344, 4345, 4350, 4355, ....

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    The OS design does look good, but why is it changed? Is it only an aesthetic issue?

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    Circle Jig

    Made a circle jig today and tried it on a piece of plywood.
    The center point goes under the router, so I can make small circles; the 2405-hole is only 79mm.
    Waiting for the plates to make the cabinet.


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    Quote Originally Posted by JBLP View Post
    Made a circle jig today and tried it on a piece of plywood.
    The center point goes under the router, so I can make small circles; the 2405-hole is only 79mm.
    Waiting for the plates to make the cabinet.


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    Hey Jblp,. Looks like a fun project your working on. Nice taste in tools too. I wish I could afford festool gear. Shoot I can't even afford a festool keychain.


    Nick

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    Project

    Hey Nick.
    Yes, it is fun. The sorting out, the making of the plan and actually working on it.
    Taste of tools; if you choose JBL vintage, you have to choose for nice tools.......
    Paul

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    Quote Originally Posted by JBLP View Post
    Hey Nick.
    Yes, it is fun. The sorting out, the making of the plan and actually working on it.
    Taste of tools; if you choose JBL vintage, you have to choose for nice tools.......
    Paul
    Don't get me wrong. If I could afford festool powertools I'd buy them. That would especially true if I did carpentry for a living. But I'm just a weekend warrior. Probably the most expensive brand of tools I have is porter cable. Jbl and festool are the same, the best of the best. And the best ain't cheap, lol.

    Yes it is fun build your own loudspeakers. I love building things.

    Good luck and keep us posted on your progress.

    Nick

  14. #14
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    Starting

    Got the material for the cabinet today, so the real work can start.

    Again, good tools is half the work (Nick: not mine, borrowed!).


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  15. #15
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    I have no problem borrowing tools, especially expensive ones. I don't own any machine tools. I use the ones I have access to at work. Makes life easier. My garage is not that big, lol. So your using mdf. I really like working with that stuff. Except for the dust. So fine it kills my allergies. But it is very easy to work with.

    are you going to clamp and glue, use screws or what?

    I use glue clamps and a pneumatic 18 gauge brad gun for most of my stuff. Except I did use confirmat screw on the side panels of my bass horns. Wanted the extra strength since they were huge.

    I don't know if you can get it in Europe but I've had very good luck with a adhesive called pl Premium. Its made by loctite. It is like peanut butter and it expands when it cure making nice airtight seems. Its not quite as strong as pva but its way stronger then the wood its self.

    looks like your one your way to having some fun. Keep us posted on your progress.

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