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Thread: JBL M2 - DIY clone

  1. #1
    Senior Member Odd's Avatar
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    JBL M2 - DIY clone

    JBL M2 - DIY clone

    New nice DIY project in Norway.
    Sorry for all the text in Norwegian, but many nice pictures and a lot of useful information collected for someone who wants to build M2.
    https://www.hifisentralen.no/forumet...-clone.108039/
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    43XX (2235-2123-2450-2405-CC 3155)5235-4412-4406-4401-L250-18Ti-L40-S109 Aquarius lV-C38 (030) 305P MkII

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    Administrator Mr. Widget's Avatar
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    Wow a nice and thorough exploration. It makes the project a virtual step by step project.

    I wonder if JBL will dry up the drivers and parts supply with so many people building clones worldwide? Hopefully not.


    Widget

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    Incredibly cool and inspiring - thanks for sharing.

    Google Translate really works a treat these days; it seems like it even does a good job of translating some Norwegian slang/idioms to English.

    I wonder if the OP in that thread will consider selling the CAD files/CNC info to interested parties... I'm sure there would be plenty of interested buyers!
    https://www.echomountainaudio.com
    Charge-Coupled Crossover PCBs

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    Member sebackman's Avatar
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    Really nice. Lots of effort going in to those cabinets. Always inspiring to see nice builds. I think I prefer the veneer version for domestic use.

    //Rob
    The solution to the problem changes the problem.
    -And always remember that all of your equipment was made by the lowest bidder

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    Quote Originally Posted by sebackman View Post
    I think I prefer the veneer version for domestic use.

    //Rob
    Same here - by a large margin.
    https://www.echomountainaudio.com
    Charge-Coupled Crossover PCBs

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    I like the clean, simple look of the two tone black + wood veneer from the hifisentralen.no thread above better, but here's another cool example of a DIY M2 I saw online somewhere that was a bit more of an homage to the vintage studio monitors we all love, with blue baffle and figural walnut veneer.
    Attached Images Attached Images  
    https://www.echomountainaudio.com
    Charge-Coupled Crossover PCBs

  7. #7
    Senior Member jmpsmash's Avatar
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    They look lovely. And great details in the build thread.

    2216ND for ~USD420 is a bargain

  8. #8
    Senior Member turnitdown's Avatar
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    MMS 135, Fs 36. Better bargains in vintage.

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    Administrator Robh3606's Avatar
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    Quote Originally Posted by turnitdown View Post
    MMS 135, Fs 36. Better bargains in vintage.
    Curious what drivers?

    Rob
    "I could be arguing in my spare time"

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    Administrator Robh3606's Avatar
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    Thanks for posting! Nice looking speakers! Too bad there is not a stock vernier option!

    Rob
    "I could be arguing in my spare time"

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    Senior Member pos's Avatar
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    Quote Originally Posted by turnitdown View Post
    MMS 135, Fs 36. Better bargains in vintage.
    These numbers alone don't mean much.
    This driver is leaps and bounds ahead of vintage JBL woofers in every possible aspect.

    Well, maybe it would not do as great a job as a door stopper compare to say a 2235H, given its weight, but that is pretty much it (and this would have to be tested).

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    Administrator Mr. Widget's Avatar
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    Quote Originally Posted by pos View Post
    These numbers alone don't mean much.
    This driver is leaps and bounds ahead of vintage JBL woofers in every possible aspect.
    +1

    Quote Originally Posted by pos View Post
    Well, maybe it would not do as great a job as a door stopper compare to say a 2235H, given its weight, but that is pretty much it (and this would have to be tested).



    Widget

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    Senior Member turnitdown's Avatar
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    Quote Originally Posted by Mr. Widget View Post
    +1 Widget
    What are the objective improvements over a, for instance, LE14H-1 or your doorstop example 2235H? Inquiring, edification starved minds, want to know.

  14. #14
    Administrator Robh3606's Avatar
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    Quote Originally Posted by turnitdown View Post
    What are the objective improvements over a, for instance, LE14H-1 or your doorstop example 2235H? Inquiring, edification starved minds, want to know.

    Well considering what a pair of either 2235's or Le-14H-1 will cost you the new drivers are a good deal. The rest of it see for yourself.

    Rob
    "I could be arguing in my spare time"

  15. #15
    Senior Member pos's Avatar
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    One obvious advantage is that it is new, so you don't have to worry about bad surrounds (ever again), wrongly installed kits, etc.

    Compared to a 2235 it is objectively better on excursion (very silent), will have less intermodulation (meaning it will be much better at playing both LF and MF at the same time), and is less subject to power compression thanks to its TCR VC.
    Looking at the different white papers, the compression curve of a 4367 appears quite similar to that of a 4435 equipped with *two* 2234. This is quite a feat although it is maybe not a fair comparison given these measurements have been taken decades apart, so conditions might vary...

    One thing to consider though is its rising response, which requires a specific passive network or active EQ to handle. The "-1" variant is easier to deal with in this regard.
    It is clearly not a drop-in replacement for any of the vintage drivers, which were meant to be flat out of the box (in the box )

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