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Thread: KM2

  1. #31
    Senior Member Anti K's Avatar
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    Mechanical Calculator

    (no joke)
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  2. #32
    Senior Member jmpsmash's Avatar
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    Quote Originally Posted by jmpsmash View Post
    Where to find the 4367 WG?

    If available, it will be easy to make a 4367 clone with the 2216ND1 and 2430K also available. There are no plans per se, however, the white paper has a internal diagram and detailed description of the construction. crossover schematic also can be found here.
    Inquired. They are available.

    Looking at the cost. To buy the parts and put together a DIY 4367 clone will cost around $3700 for the electronics alone.

    ~$1500 for 2216ND1
    ~$700 for D2430K
    ~$1000 4367 horn
    ~$500 crossover

  3. #33
    Senior Member Anti K's Avatar
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    Quote Originally Posted by jmpsmash View Post
    Inquired. They are available.

    Looking at the cost. To buy the parts and put together a DIY 4367 clone will cost around $3700 for the electronics alone.

    ~$1500 for 2216ND1
    ~$700 for D2430K
    ~$1000 4367 horn
    ~$500 crossover
    Do You suggest me to make 4367 clones?

  4. #34
    Senior Member jmpsmash's Avatar
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    Quote Originally Posted by Anti K View Post
    Do You suggest me to make 4367 clones?
    I don't think anyone has done direct comparison between the sound of the M2 and 4367 waveguide. There are many M2 WG out there, but never seen anybody who has gotten their hand on the 4367 waveguide alone.

    However, as my mom says (she owns the 4367), the 4367 WG look way better than the M2 butt hole.

    So if that's a factor in decision, that's a possibility.

  5. #35
    Senior Member 1audiohack's Avatar
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    Quote Originally Posted by grumpy View Post
    2269H... 2245 specbaffle cutout 16 13/16" 427mm from 2245 spec a pain to measure directly/accurately, but maybe I'll do the circumference and some maths or find a big set of dividers ...
    Sorry for the brevity on the Hillbilly caliper set. I just grabbed a round thing (paint can) and the squares on the way through the shop on my way to work and took a quick pic. Just thought nearly everybody likely has a pair of framer squaresBarry.
    If we knew what the hell we were doing, we wouldn't call it research would we.

  6. #36
    Senior Member Anti K's Avatar
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    My listening room is basically like small club room.
    Difference is, I do not stand (or jump) but just sitting in the first row.
    Green rectangle is 'the listening' area (have to separate with curtains) and red line is 'the band'. Same time want to keep the clean look. No cahins and metal and scrached front grilles.
    That's why I'm thinking of veneered monsters.
    When there is a usual day, the curtains are hidden and the monsters play easy. The Volume-knob would be as well a part of plan...

    Started the thread for some advise ... have people experiences with SUB18, how they are implemented with M2. If the M2 does not play all the way down - SUB18 does this part - maybe there is no need such of big enclosure for 2216 then ... etc.
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  7. #37
    Senior Member grumpy's Avatar
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    @hack Haha... thought the same. Square or point to point. I’d have to go into the garage... ����☔️ (Apologies for the potentially unreadable emojis... spiderwebs and bats)

    that calculator is great!

  8. #38
    Senior Member Anti K's Avatar
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    Quote Originally Posted by jmpsmash View Post
    I don't think anyone has done direct comparison between the sound of the M2 and 4367 waveguide. There are many M2 WG out there, but never seen anybody who has gotten their hand on the 4367 waveguide alone.

    However, as my mom says (she owns the 4367), the 4367 WG look way better than the M2 butt hole.

    So if that's a factor in decision, that's a possibility.
    Yep, the 4367 WG may 'work' better for me ; as the project isn't so called near-field or reference.
    4367 WG is way deeper and wide!

  9. #39
    Administrator Robh3606's Avatar
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    "I could be arguing in my spare time"

  10. #40
    Senior Member Anti K's Avatar
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    Quote Originally Posted by Robh3606 View Post
    According to this data don't see why not to add 2269 for low end.
    - Data from this JBL site
    - Graph 270ltr total -> 225ltr ported 2269 Red / 45ltr sealed 2216 Green
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    Last edited by Anti K; 01-29-2021 at 03:38 PM. Reason: typing

  11. #41
    Senior Member Anti K's Avatar
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    Peak

    2269 has 3x2216 peak ?

    Isn't it why it's used in Vertec.

  12. #42
    Senior Member grumpy's Avatar
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    1) finished off 2269 dim measures (post edited)... appears most JBL 18"ers will drop into the same hole (front mounted), caveat being cabinet depth requirements.
    2) separate/modular enclosures seems like a good idea for reasons already stated.
    3) I know at least one person that has augmented their M2s with SUB18s... I believe there was no remorse. Necessary? perhaps for some. That's a pretty large space.

  13. #43
    Senior Member Anti K's Avatar
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    Quote Originally Posted by jmpsmash View Post
    they are available.
    4367 horn
    where?
    Last edited by Anti K; 01-30-2021 at 03:19 AM. Reason: typ

  14. #44
    Administrator Robh3606's Avatar
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    "I could be arguing in my spare time"

  15. #45
    Administrator Mr. Widget's Avatar
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    Quote Originally Posted by Robh3606 View Post
    Interesting. I imagine he has a very good playback system, but geez, I wouldn't want to sit on that interrogation chair and listen to music in that environment.

    On the science however, I think he has gone down an interesting rabbit hole. In my experience the importance of time coherence hasn't trumped other playback issues, but once you get everything else right, if you can also correct the time/phase response then go for it.

    That said, I wonder if he ever tried rotating the room orientation 90°? In my last two rectangular rooms of roughly similar proportions to his, I have found going with the typical audiophile "deep room" didn't work as well as going with a "wide room".


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