Recent Content by JackNC

  1. JackNC
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    Baffle Walls and Toe-in?

    Tux is telling you that you can get away with not toeing in your mains but the counterpoint is it will work better if you do. Why compromise what...
    Post by: JackNC, May 1, 2015 in forum: General Topics
  2. JackNC
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    Another "Synergy" Build...

    nice clean fitting flare. Keep going! What did you end up with for the woofer hole diameter? I know the problem of which you speak. I was in...
    Post by: JackNC, Apr 7, 2013 in forum: Waveguides and Horns
  3. JackNC
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    DIY Synergy/Unity spreadsheet

    Hi Bill: I picked up 12 of those NS6's when you warned they were getting in short supply. Now I don't think I'll need them. I'd be happy to pass...
    Post by: JackNC, Mar 19, 2013 in forum: Waveguides and Horns
  4. JackNC
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    DIY Synergy/Unity spreadsheet

    Hi Scott: Yes, the original crossover isn't all that difficult to understand from a basis of experience; there are just a lot of pieces and a...
    Post by: JackNC, Feb 10, 2013 in forum: Waveguides and Horns
  5. JackNC
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    DIY Synergy/Unity spreadsheet

    Designers are led to specific crossover configurations by a kind of six sense or intuition developed over doing lots of crossover designs and then...
    Post by: JackNC, Feb 10, 2013 in forum: Waveguides and Horns
  6. JackNC
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    Another "Synergy" Build...

    More on the close MIC analogy In the horn, making the frustrum deeper is equivalent to moving the MIC back. You can only do this so far before...
    Post by: JackNC, Feb 4, 2013 in forum: Waveguides and Horns
  7. JackNC
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    Another "Synergy" Build...

    Thanks for the pictures. I wanted to see those plugs and how the sound gets past them. .I guess you'll just suspend them in the cavity. Your...
    Post by: JackNC, Feb 4, 2013 in forum: Waveguides and Horns
  8. JackNC
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    Another "Synergy" Build...

    this morning I'm thinking you can measure this effect without having built the horn. Just screw the speaker down to a scrap of plywood with a...
    Post by: JackNC, Jan 29, 2013 in forum: Waveguides and Horns
  9. JackNC
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    Another "Synergy" Build...

    I'm leary about two holes at 180 degrees. I see that Danley does this for woofers, where, if anything, he wants increased HF roll off, but I...
    Post by: JackNC, Jan 28, 2013 in forum: Waveguides and Horns
  10. JackNC
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    Another "Synergy" Build...

    I think I have the explanation. I just reread Keele's paper and saw two things: 1. the analysis if for an exponential horn 2. the formula depends...
    Post by: JackNC, Jan 27, 2013 in forum: Waveguides and Horns
  11. JackNC
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    Another "Synergy" Build...

    Great progress and very nice shop! Mine has to fit in my garage and before I run something through the table saw I always look back over my...
    Post by: JackNC, Jan 27, 2013 in forum: Waveguides and Horns
  12. JackNC
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    Another "Synergy" Build...

    I think you are correct about the difficulty of finding a good driver but I also think the problem is significantly eased when one uses (as Danley...
    Post by: JackNC, Jan 25, 2013 in forum: Waveguides and Horns
  13. JackNC
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    Another "Synergy" Build...

    Scott: Thanks for the detailed responses. I need some time to absorb them and my day job is getting in the way. I will keep the conversation...
    Post by: JackNC, Jan 24, 2013 in forum: Waveguides and Horns
  14. JackNC
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    Another "Synergy" Build...

    Hi Scott: Impressively smooth simulations. I've been doing a lot of sims also so I can appreciate that result. Let's compare notes. My target...
    Post by: JackNC, Jan 23, 2013 in forum: Waveguides and Horns
  15. JackNC
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    4-way univeral active crossover and power amplifier setup

    too bad we can't get midwoofers with dual 4ohm voice coils. Then use the 6x100W board, dual woofers, and have plenty of headroom
    Post by: JackNC, Oct 2, 2012 in forum: DIY Speakers and Subwoofers