Gravesen Ekta/9700 in Brazilian Cherry

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  • kendomusic
    Junior Member
    • Dec 2007
    • 25

    Gravesen Ekta/9700 in Brazilian Cherry

    This forum has encouraged to try the world of DIY speaker building. Thanks to Troels Gravesen for sharing his designs and this forum for providing information on speaker building and making my first speaker build a success(in my mind). I started this project in July 07 and finished it last week. My work keeps getting in the way.
    Since Troels design required a thick and inert enclosure and the unavailability of 1" MDF in my location(Temecula, Ca), I opted to use instead 3/4" MDF laminated with 3/8 Brazilian Cherry woodfloor planks leftover from my woodflooring project. The result is a very hard, inert, and heavy enclosure. I used 3/4" MDF and 5/8 " woodfloor planks for the baffle.
    For vibration dampening the enclosure was lined with asphalt/bitumen tape from Home Depot. For sound dampening I lined the enclosure with 3/4 inch thick poly/cotton batting. Behind the woofer is eggcrate foam that comes with shipping boxes for computer equipment. The bottom is lined with 2" stuffing of polyfiber.
    The capacitors and inductors used were Jantzen from Parts Express. The resistors are Dayton resistors also from PE. The crossover for the tweet/mid is on the bottom of the baffle, the woofer crossover is on the bottom of the speaker.
    The result is a very crisp high, clear vocals, and clean bass( the 6.5 inch SS speaker can go very low). These speakers are great for music for which I intended to use them for.
    I tested music from the following artists: Craig Chaquico, Mark Knopfler, Norah Jones, Allison Krauss and Union Station, Donald Fagen, Eric Clapton, and Peter Gabriel.
    I tested them for HT but I preferred my Klipsch system. But for music, the Ekta blows it away.
    Attached Files
  • ttan98
    Senior Member
    • Mar 2007
    • 153

    #2
    very nice woodwork, I was thinking of using woodfloor plank as well.

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    • Jim85IROC
      Member
      • Jan 2005
      • 99

      #3
      I've been thinking about using them also, but I'm just not sure how they'll work on the curved enclosure that I'm planning. I do think that the horizontal wood grain on the side of a speaker gives it a more slender appearance than the more typical vertical grain.

      Comment

      • kendomusic
        Junior Member
        • Dec 2007
        • 25

        #4
        For curved enclosures you may have to use 1/4" planks with cross cuts to allow bending of the wood plank. I suggest you use Bostik Best glue if you will be using the planks on curved surface. Bostik has excellent grip. Also, when doing measurements you have to take into consideration that glues like like Bostik adds 1/16 to 1/8 inch thickness depending on the amount of glue applied.

        Comment

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