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Thread: My recent ventures into DIY audio...

  1. #21
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    Re: My recent ventures into DIY audio...

    Quote Originally Posted by Evan Kirkendall View Post
    Well, I loved the single 18's so much, I built 4 more. These things really kick ass for being a single 18. Grills get foam backed on Friday, and I'll have some SMAART traces then too.
    Evan

    Can you share the dimensions and total weight?

  2. #22
    Senior Evan Kirkendall's Avatar
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    Re: My recent ventures into DIY audio...

    And, the results are in. The SMAART trace is attached. It was windy today, so the phase traces are a little wonky... The orange trace is raw, the green trace is with HPF/LPF, and the blue trace is with 1 out of band EQ cut. I'm very happy with these, and they look great with the grills foam backed!



    Evan
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  3. #23
    Graduate Silas Pradetto's Avatar
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    Re: My recent ventures into DIY audio...

    Quote Originally Posted by Evan Kirkendall View Post
    And, the results are in. The SMAART trace is attached. It was windy today, so the phase traces are a little wonky... The orange trace is raw, the green trace is with HPF/LPF, and the blue trace is with 1 out of band EQ cut. I'm very happy with these, and they look great with the grills foam backed!



    Evan
    As I posted on Evan's Facebook, FPPO should not be used for sub measurements since it has very low resolution down low. Use a fixed FFT instead and apply lots of smoothing if you want. The mess up high won't matter since you're zooming that out anyway.
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  4. #24
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    Re: My recent ventures into DIY audio...

    Quote Originally Posted by Silas Pradetto View Post
    As I posted on Evan's Facebook, FPPO should not be used for sub measurements since it has very low resolution down low. Use a fixed FFT instead and apply lots of smoothing if you want. The mess up high won't matter since you're zooming that out anyway.
    FPPO has equal resolution in each octave. That is what is stands for, Fixed Point Per Octave. Its resolution is no better, or worse than anywhere else you use FPPO. Whether FPPO's inherent resolution is high enough for your purposes depends a number of things that would distract the point of the thread.

    If you do use a fixed FFT, I would suggest using one of at least 16k samples at 48kHz sampling frequency. That will give a frequency resolution of 3Hz.

  5. #25
    Senior Evan Kirkendall's Avatar
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    Re: My recent ventures into DIY audio...

    Had another free weekend a few weeks ago, so we built 4 more!

    Took all 8 out on a gig this past weekend, and I gotta say, I had plenty of headroom in a 600 cap room!

    Looking forward to building another 4 soon, and getting them out on some big gigs later this month! These are pretty impressive little boxes. If anyone is ever in the MD area and wants to hear them, let me know!

    PS, just some other specs:


    Size: 24w x 26h x 30d
    Weight: 89lbs






    Evan
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    Last edited by Evan Kirkendall; 09-17-2012 at 10:35 PM.

  6. #26
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    Re: My recent ventures into DIY audio...

    Hey Evan, those pl6's treating you right? Had to build some more subs to soak up that juice huh...lol

  7. #27
    Senior Evan Kirkendall's Avatar
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    Re: My recent ventures into DIY audio...

    Quote Originally Posted by Shane Presley View Post
    Hey Evan, those pl6's treating you right? Had to build some more subs to soak up that juice huh...lol
    They've been rock solid. Barely been tickling the -10 lights with all 8.



    Evan

  8. #28
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    Re: My recent ventures into DIY audio...

    Quote Originally Posted by Evan Kirkendall View Post
    Had another free weekend a few weeks ago, so we built 4 more!

    Took all 8 out on a gig this past weekend, and I gotta say, I had plenty of headroom in a 600 cap room!

    Looking forward to building another 4 soon, and getting them out on some big gigs later this month! These are pretty impressive little boxes. If anyone is ever in the MD area and wants to hear them, let me know!

    PS, just some other specs:


    Size: 24w x 26h x 30d
    Weight: 89lbs






    Evan

    Nice, I'm a firm believer of build your own.

  9. #29
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    Re: My recent ventures into DIY audio...

    What 18's and 12's are you using? Looks like a Jbl horn, what driver is on it?

  10. #30
    Senior Evan Kirkendall's Avatar
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    Re: My recent ventures into DIY audio...

    Quote Originally Posted by Alan Sledzieski View Post
    What 18's and 12's are you using? Looks like a Jbl horn, what driver is on it?
    It's not what you'd expect.

    The tops in the last pic are Community SLS960's though.



    Evan

  11. #31
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    Re: My recent ventures into DIY audio...

    Quote Originally Posted by Evan Kirkendall View Post
    It's not what you'd expect.

    The tops in the last pic are Community SLS960's though.




    Evan
    I take it you don't want to tell us what your using for some reason? I was reffering to the 1st pick of the topic.

  12. #32
    Senior Evan Kirkendall's Avatar
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    Re: My recent ventures into DIY audio...

    Quote Originally Posted by Alan Sledzieski View Post
    I take it you don't want to tell us what your using for some reason? I was reffering to the 1st pick of the topic.
    Can't reveal all of the secrets! Just know they are very good components. Some of which are not available off the shelf.



    Evan

  13. #33
    Graduate Tim McCulloch's Avatar
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    Re: My recent ventures into DIY audio...

    Quote Originally Posted by Evan Kirkendall View Post
    Can't reveal all of the secrets! Just know they are very good components. Some of which are not available off the shelf.



    Evan
    Some of which were surplussed from a "major global provider."
    I hate to bum you out,
    but you have without a doubt,
    the ugliest aura this poor boy has ever seen.

  14. #34
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    Re: My recent ventures into DIY audio...

    Nice boxes! So, who rides the fixie?

    - Wil
    "....................." - Marcel Marceau

  15. #35
    Senior Evan Kirkendall's Avatar
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    Re: My recent ventures into DIY audio...

    Quote Originally Posted by Tim McCulloch View Post
    Some of which were surplussed from a "major global provider."
    I will neither confirm, or deny this.


    Evan

  16. #36
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    Re: My recent ventures into DIY audio...

    Whats the sence of a Do it yourself build if you don't say what you did in the first place??? Good chance the products you are using are not something that are deemed,, God like?

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