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Thread: Passive Monitor Thread

  1. #46
    Administrator Mr. Widget's Avatar
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    Looking good... 4.7 cu ft looks bigger than I was expecting in your photos, but then I guess it never was a small speaker.

    Will you also have 2 by 4 braces between the baffle and the rear panel?


    Widget

  2. #47
    Administrator Robh3606's Avatar
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    Will you also have 2 by 4 braces between the baffle and the rear panel?
    Hello Widget

    Thanks

    Yes there is a missing brace that goes across the back that will have a brace attached that goes to the front baffle just under the woofer. Basically a T brace. It's a big box figure 30 X 22 x 16 overall plus the horn enclosure up top so it's going to be a big speaker when all is said and done. The baffle is cut to match the horns width so with the round overs on each side of the waveguide it will exactly match the width of this cabinet. The top is going to be open back with the crossovers inside for easy access.

    I have to see if my mass coat is still good. I plan to use that on the inside to help deaden the un-braced sections of the cabinet. Used that when I built my Array cabinets and it did a great job on them.

    So have you ever played your clamp webbing?? Mine a so tight they sound like guitar strings when you hit them!


    Rob
    "I could be arguing in my spare time"

  3. #48
    Administrator Mr. Widget's Avatar
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    Quote Originally Posted by Robh3606 View Post
    So have you ever played your clamp webbing?? Mine a so tight they sound like guitar strings when you hit them!
    Mine always seem to be out of tune.


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  4. #49
    Administrator Robh3606's Avatar
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    Got my second cabinet strapped and glued. Have to make T braces, tops and bottoms and make holes for my ports in the rear panels. So just a couple of hours work left for functional cabinets. Have to start on the tops for the horn next. Found an entire 2 gallon pail of Mascoat for the inside of my cabinets! Been so long forgot I had it.

    Nice surprise!

    https://www.mascoat.com/sound-damping-and-control.html

    Rob
    "I could be arguing in my spare time"

  5. #50
    Administrator Robh3606's Avatar
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    Tops done now I can get them together and coat the insides with the Mascoat before I fiberglass. Luckily the weather is going to be good enough to work outside. With any luck by the weekend I will have the drivers in so I can run sweeps to verify Fb. Going for the 26Hz box.

    Rob
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    "I could be arguing in my spare time"

  6. #51
    Administrator Mr. Widget's Avatar
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    They are taking shape nicely!


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  7. #52
    Senior Member jmpsmash's Avatar
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    looking great! do you plan to reinforce the front baffle?

  8. #53
    Administrator Robh3606's Avatar
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    looking great! do you plan to reinforce the front baffle?
    Hello jmpsmash

    Thanks

    I use a T brace that attaches right bellow the woofer cut out to stiffen the front baffle. I have to cut the rear panels for the ports and terminals. Other than that ready to start the tops which should be a bit more challenging.

    What hardware was used to attach the horn to the baffle?? I couldn't find it in the M2 clone threads.

    Thanks in advance

    Rob
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  9. #54
    Senior Member srm51555's Avatar
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    Nice progress!. Try this in the Project M2 DIY Thread:

    #51

  10. #55
    Administrator Robh3606's Avatar
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    Hello srm51555

    Thanks so much for the link. Great idea to use self tapping screws! I was concerned because they were not tapped.

    Rob
    "I could be arguing in my spare time"

  11. #56
    Senior Member srm51555's Avatar
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    No problem, glad I could help. It was DonC’s who found the screws. I should probably reference that post better on post one of the thread.

    Thanks,
    Scott

  12. #57
    Administrator Robh3606's Avatar
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    Got a lot done will have cabinets by the weekend. Got two coats of Delta dB inside the cabinets, ports installed. Just have to add a shoulder inside to mount the back baffle against and add fiberglass. Then I can fire them up and see where the Fb ended up. Can't wait to finally hear these drivers.

    Going to lug them upstairs and drop my HEIL's on them to see how the bottoms sound.

    Those 1/4 rounds are going to work really well with the waveguides. With the ledge on the bottom of the waveguide it lines right up with the front baffle and nests right into the 1/4 round.

    Rob
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    "I could be arguing in my spare time"

  13. #58
    Senior Member grumpy's Avatar
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  14. #59
    Senior Member Flodstroem's Avatar
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    Gorgeous and an advanced work Rob.
    It will be an easy job to swap the CD if you want to try several types of CD or Dias.
    Flodstroem

  15. #60
    Administrator Robh3606's Avatar
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    Thanks Flodstroem

    Had to adjust the port length as I cut them too short miss read the instructions! Got one up and tested to see where the Fb was and it's on the money. First time using CLIO Pocket and like it! Fb also verified with my old and trusty WT2. Now have to finish the second one and lug them upstairs for a listen!

    Rob
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    "I could be arguing in my spare time"

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