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Midwest Audio Fest

It’s that time audio enthusiasts!

Registration for the 2019 Speaker Design Competition is now open! Visit midwestaudiofest.com for details and to list your speaker project.
We are excited to see all returning participants, and look forward to meeting some new designers this year, as well!

Be sure your plans include a visit to the Parts Express Tent Sale for the lowest prices of the year, and the Audio Swap Meet where you can buy and trade with other audio fans.

We hope to see you this summer!

Vivian and Jill
2 of 2 < >

Midwest Audio Fest

It’s that time audio enthusiasts! Registration for the 2019 Speaker Design Competition is now open! Visit midwestaudiofest.com for details and to list your speaker project. We are excited to see all returning participants, and look forward to meeting some new designers this year, as well! Be sure your plans include a visit to the Parts Express Tent Sale for the lowest prices of the year, and the Audio Swap Meet where you can buy and trade with other audio fans. We hope to see you this summer! Vivian and Jill
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The Mystiques - Build Thread

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  • Squidspeak
    replied
    Originally posted by Kevin K. View Post
    Started on the sidewalls but didn't get very far this weekend, hope to finish them up next weekend.

    Using an Industrial Epoxy Laminating Resin. I like this a little more than glue because it soaks into the MDF further.
    [ATTACH=CONFIG]n1371066[/ATTACH]

    Pins are your friends! Makes clamping so much easier when you don't have to fight the panels sliding around all over the place. Two pins in opposite corners usually suffices.
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    Clamped up and let it sit overnight. Ready to go the next morning.
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    Inside of the left sidewall. Decided to take advantage of an operation available in my CNC software, Spiral cut from center out. By stepping over 1/4" at a time, it left a pretty good scallop. Not sure how much benefit the ridges will have on the back waves but figured it couldn't hurt me. It would have been difficult to apply traditional damping to the sidewalls due to the compound curves.
    [ATTACH=CONFIG]n1371069[/ATTACH]
    ​Kevin, what is brand/type of epoxy laminating resin. I mostly use West Systems for that type of bond. Also I would coat the outside of cab to prevent the edge lift,
    ​a lot more work but eliminates the issue. I laminated MDF to BB then kerfed it and bent it in a jig so I coated the outside wall with epoxy to prevent splitting and
    lifting of the grain.

    Leave a comment:


  • PWR RYD
    replied
    Those are going to look awesome!

    Leave a comment:


  • Kevin K.
    replied
    Originally posted by dst View Post
    Looking very nice so far. that is a challenging build. I am dying to hear what you think of those drivers.
    ​Thanks! These are by far some of the nicest drivers I've purchased and I'm looking forward to hearing them as well.

    Originally posted by xmax View Post
    Bravo, nice build! I need to try that superglue trick, I have made the mistake of using carpet tape to hold
    parts down on my CNC table, holy crap is that stuff hard to get off!
    You'll love the superglue/masking tape trick. The shear force is incredible yet when you're ready to remove the tape it's as easy as peeling a piece of masking tape from a painted wall. The only caveat is the tape needs to be perfectly flat on both surfaces, no trash under either piece or you won't get intimate contact which is critical to how it works.

    Originally posted by BOBinGA View Post
    Wow! I'm pretty hard to impress, but this build does it. I wish I could hear the finished product. (I have heard Rick's tweeter and it is something special. You will surely enjoy it.)
    -Bob
    Thanks Bob. I know Rick pretty well and asked him for a suggestion on the tweeter. He feels these two drivers will work very well together. Looking forward to hearing them for the first time.

    Leave a comment:


  • dcibel
    replied
    http://www.audioxpress.com/article/t...ribbon-tweeter

    Leave a comment:


  • xmax
    replied
    I have never heard of those interesting ribbon (with a voice coil) tweeters, how would you compare them
    to say a RAAL?

    Leave a comment:


  • BOBinGA
    replied
    Wow! I'm pretty hard to impress, but this build does it. I wish I could hear the finished product. (I have heard Rick's tweeter and it is something special. You will surely enjoy it.)
    -Bob

    Leave a comment:


  • xmax
    replied
    Bravo, nice build! I need to try that superglue trick, I have made the mistake of using carpet tape to hold
    parts down on my CNC table, holy crap is that stuff hard to get off!

    Leave a comment:


  • dst
    replied
    Looking very nice so far. that is a challenging build. I am dying to hear what you think of those drivers.

    Leave a comment:


  • Kevin K.
    replied
    Rear Baffle, braces and sidewalls all laid out ready for assembly.

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    And a few pics of everything sitting together in dry form.

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    Had some issues with tear out on the top. Know better than to cut MDF to a razor edge but tried my luck at it anyway, as you can see, my luck ran out. Expected a little body work to accompany these cabs so no big deal. That's it for this weekend.





    Leave a comment:


  • Kevin K.
    replied
    Moving on to the outside of the sidewalls. Here's a fixture that's required, it has an interchangeable center support section for the different sides and the fixture is indexed to the table's spoilboard with a couple of 1/2" pins. Needed the ability to take it on and off and be able to get it back to the same place every time for repeatability.

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    Here's a close up showing how the dado cuts index to the fixture for alignment on the machine.

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    Was only able to secure the sidewalls with toe nailed drywall screws on the ends but they did the job fine.

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    This pic was right after the completion of the finish cut. Still lacks the two end cuts.

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  • Kevin K.
    replied
    Round 2: Second Weekend of many to come. Left off on an almost finished left sidewall last weekend, picked up from there. A few short videos showing some of the cuts to the inside of the sidewalls.




    Leave a comment:


  • Kevin K.
    replied
    Originally posted by Dhoughton View Post
    Fascinating design, I can’t wait to see what the finished project looks like. I’ve been trying to find any excuse I can to use these new ceramic woofers
    Thanks! My targeted completion date for cabinets and stands is end of May, so this wont be a short ride. Basic Cabinets should be end of April, ready to be primed and painted. We'll see how it all goes, I sometimes run into issues for not thinking far enough ahead and have to come up with solutions around those issues. One of my pitfalls for being so impatient.

    Whatcha waiting on man, the specs speak for themselves on these drivers and everyone that's used them so far is loving em. An added bonus, they are easy on the eye, sexy is an understatement.

    Leave a comment:


  • Dhoughton
    replied

    Leave a comment:


  • Kevin K.
    replied
    Originally posted by KEtheredge87 View Post
    Yes! New Kevin K. Build Thread! Subscribed and ready to drool over my keyboard...
    Thanks Keith! There's a disclaimer in very fine print at the beginning of the thread that states I can't be held responsible for short-circuited keyboards.

    Leave a comment:


  • KEtheredge87
    replied
    Yes! New Kevin K. Build Thread! Subscribed and ready to drool over my keyboard...

    Leave a comment:

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