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The Defiants - InDIYana 2019 Build

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  • KEtheredge87
    replied
    Originally posted by a4eaudio View Post

    Keith, did you end up changing the crossover for MWAF from the 5-part InDIYana version?
    Yessir. I added a 1.5 ohm resistor in parallel with the woofer's, following the capacitor.
    Click image for larger version

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  • Wolf
    replied
    ...to 6 parts he said at MWAF.
    Wolf

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  • a4eaudio
    replied
    Originally posted by KEtheredge87 View Post
    So what's next from here? I will be doing some vertical off-axis measurements to accompany the horizontal off-axis measurements that I detail in the report. I will also be doing some A-B testing with an additional 1.5ohm resistor after the 20uF capacitor in the LF circuit to control the woofer knee. I tend to like relaxed midranges, and the current 5 part XO measures much more flat than relaxed. I don't find the current XO objectionable at all with 5 parts... I just think it might be that much better with a 6th component. Time will tell.
    Keith, did you end up changing the crossover for MWAF from the 5-part InDIYana version?

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  • 4thtry
    replied
    Originally posted by KEtheredge87 View Post
    As-expected, the PETT forum software won't allow me to post my full write-up directly because the filesize is over 2MB. Instead, I have a google drive link where you all can view my writeup by clicking below. You'll have to trust that I'm not going to rick-roll you ;)

    The Defiants - InDIYana 2019 Bare Minimum Competition - Final Writeup

    So what's next from here? I will be doing some vertical off-axis measurements to accompany the horizontal off-axis measurements that I detail in the report. I will also be doing some A-B testing with an additional 1.5ohm resistor after the 20uF capacitor in the LF circuit to control the woofer knee. I tend to like relaxed midranges, and the current 5 part XO measures much more flat than relaxed. I don't find the current XO objectionable at all with 5 parts... I just think it might be that much better with a 6th component. Time will tell.

    Otherwise, these bad boys will be going to Midwest Audio Fest in July! I hope to see you guys there!

    Thank you so much for following along with my build and learning with me. The interactions are what make the build logs all worth it.

    - Keith
    Wow. Cool 36 page pdf write up. Good looking horizontal polars, CSD and toneburst plots. Very detailed. Must have taken a long time to put this all together! Good job!

    So, looks like we are all getting ready for a re-match in Springboro! I will be in the <$200 category as well.

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  • wogg
    replied
    Originally posted by KEtheredge87 View Post
    Wogg... I can't quite decide what category I should enter into. I handily fall into the under $200 category with only $87 in drivers ($100 if you count the waveguide). The All-Dayton category could in theory have someone showing up with a giant WMTMW with 8's and 10's and whatnot, which would be an odd comparison to a 2-way bookshelf design. I know it's about sound quality... but I tend to think people listen to music with their eyes more than their ears sometimes.
    I just figured out that I have a family reunion that weekend. I'd ditch them for MWAF but this part of the family only gets together every 5 years-ish. Kinda disappointed...

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  • KEtheredge87
    replied
    Originally posted by PWR RYD View Post
    Cool looking speakers Keith!
    Thanks Craig! It was a blast putting these together!

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  • PWR RYD
    replied
    Cool looking speakers Keith!

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  • Wolf
    replied
    I'll be in the <$200 with the both of you with my Zingers...
    Wolf

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  • KEtheredge87
    replied
    Originally posted by wogg View Post
    Are you going for the under $200 or all Dayton category Keith? Mine will be back in the under $200.

    I think it will come down to personal preference and the audition tracks... that goes for all of the expected repeats I heard over the weekend. They're all damn good!
    Wogg... I can't quite decide what category I should enter into. I handily fall into the under $200 category with only $87 in drivers ($100 if you count the waveguide). The All-Dayton category could in theory have someone showing up with a giant WMTMW with 8's and 10's and whatnot, which would be an odd comparison to a 2-way bookshelf design. I know it's about sound quality... but I tend to think people listen to music with their eyes more than their ears sometimes.

    Leave a comment:


  • wogg
    replied
    Are you going for the under $200 or all Dayton category Keith? Mine will be back in the under $200.

    I think it will come down to personal preference and the audition tracks... that goes for all of the expected repeats I heard over the weekend. They're all damn good!

    Leave a comment:


  • jhollander
    replied
    Keith, nice write up on the Tolex and write up in general. Not likely you are going to be in the same category as Nick at MWAF unless Nick changes the woofer?

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  • KEtheredge87
    replied
    Originally posted by scottvalentin View Post
    DID NOT SEE THE BLUE SNAKESKIN COMING!
    Nice job Keith and hope to hear how you made out in the competition. Those look amazing and unique, and obviously a meticulously designed project.
    Thanks Scott! I actually got knocked out in the first round by ugly woofer and his very well designed honeycombs! He used the aluminum dome RST28 tweeter to great effect. I think I took 14 votes to his 24 votes! At the end of the day I was still smiling as I heard my speakers in the room, so I consider that a win. I'm looking forward to a rematch at MWAF

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  • scottvalentin
    replied
    DID NOT SEE THE BLUE SNAKESKIN COMING!
    Nice job Keith and hope to hear how you made out in the competition. Those look amazing and unique, and obviously a meticulously designed project.

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  • OldBeginner
    replied
    I would say you did not go overboard at all! These kinds of threads are fascinating and watching you work through this process is both entertaining and informative. i don't know if I will ever try to design anything of my own, but seeing others work through the process is a big part of what makes this forum a place I come back to.

    Also - those look really really good. My hat is off to your woodwork.

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  • KEtheredge87
    replied
    Originally posted by Drjay View Post
    Your PDF write-up is top notch as were the Defiants in real life. Thanks for posting it all.
    Thanks Jay! I did go full-on Master's Thesis on that writeup More of a reflex than anything... it's amazing how that kind of writing style sticks with you long after the document gets published!

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