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  • Problem with solid wood baffles

    I was given these cabs made out of solid walnut
    Note the crack that extends the entire length of the baffle
    Click image for larger version

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    Click image for larger version

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    A cautionary example of what could happen.
    "Not a Speaker Designer - Not even on the Internet"
    “Pride is your greatest enemy, humility is your greatest friend.”
    "If the freedom of speech is taken away, then dumb and silent we may be led, like sheep to the slaughter."

  • #2
    Re: Problem with solid wood baffles

    This started to happen to my pine baffles. I injected gorilla glue and it stopped. I skived off the expanded glue and touched up the stain.
    http://jaysspeakerpage.weebly.com/

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    • #3
      Re: Problem with solid wood baffles

      Not what I want to see as I'm working on solid mahogany baffles today.
      "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche

      http://www.diy-ny.com/

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      • #4
        Re: Problem with solid wood baffles

        What a bummer. I've made a bunch of solid wood baffles in the past couple years. Hope they don't start exploding on me.

        Was that baffle glued to the rest of the cabinet? I think screws with some room for expansion is the recommended attachment approach?

        You gonna repair them?

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        • #5
          Re: Problem with solid wood baffles

          I haven't decided if I'm going to attempt repair; I thought a friend who is building a music studio/man hut might want them.
          A bit contingent on his decision, otherwise low priority.
          Some minor foam surround tear on one driver, otherwise they still work and sound fine as is; and much better relieved of bass reproduction - hooked to an active subwoofer.
          It's been a while but I believe ( and they appear ) glued ONLY - haven't popped out the drivers and done an exploratory.
          "Not a Speaker Designer - Not even on the Internet"
          “Pride is your greatest enemy, humility is your greatest friend.”
          "If the freedom of speech is taken away, then dumb and silent we may be led, like sheep to the slaughter."

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          • #6
            Re: Problem with solid wood baffles

            Yup. That's what happened to one of my Sunflower baffles, which were made of solid Oak. I had been hoping they would be immune to that kind of spilitting, since they were from 50 year-old reclaimed shelving. Nope.
            Isn't it about time we started answering rhetorical questions?

            Paul Carmody's DIY Audio Projects
            Twitter: @undefinition1

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            • #7
              Re: Problem with solid wood baffles

              I've been using speakers made with solid wood panels for over 12 years without issues. But I only use solid wood for the side walls and the front or rear baffles. Only well dried wood is used and typically pocket screw fasteners for larger panels or biscuits are used.

              My inclination is that the baffles have the most machining and stresses from mounting drivers and such. Hence, the baffles are most likely to split so I avoid that potential problem.

              Jim
              Last edited by Jim Griffin; 02-15-2015, 06:52 PM.

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              • #8
                Re: Problem with solid wood baffles

                It does not matter how old the wood is or how well "seasoned", acclimated or dried. Moisture gain/loss will make make solid wood move. If restrained, something will give, somewhere, eventually.
                ~99%
                Make me an angel that flies from Montgomery
                Make me a poster of an old rodeo
                Just give me one thing that I can hold on to
                To believe in this livin' is just a hard way to go

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                • #9
                  Re: Problem with solid wood baffles

                  Originally posted by Paul Carmody View Post
                  Yup. That's what happened to one of my Sunflower baffles, which were made of solid Oak. I had been hoping they would be immune to that kind of spilitting, since they were from 50 year-old reclaimed shelving. Nope.
                  Paul, you can use this to your advantage. A guy can use some India Ink and a small artists paintbrush to fill the backside of the split. The flowing Ink creates a black seam looking totally skippy. I've never done it with oak, but on darker woods it really looks pretty darn good. I imagine the average Joe would consider it to be a normal thing and woulnd't even notice the split. All the best, Mike

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                  • #10
                    Re: Problem with solid wood baffles

                    Wood will expand and shrink in response to humidity changes in the environment. The wider the plank, the more pronounced the expansions. No amount to finish will stop it. it may slow it down but it will still change. It is just nature. I learned this the hard way. Now if, you fill the crack with something else and then it shrinks again due to moisture loss, the wood will have to move or crack somewhere else.

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                    • #11
                      Re: Problem with solid wood baffles

                      Oh crap! Don't tell me this. I just put on the finish on a couple of Paduak baffles for a pair of Caritas that will be a wedding present. Luckily, I have till August to see if any bad stuff happens.
                      Attached Files

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                      • #12
                        Re: Problem with solid wood baffles

                        Are these hardwood baffles glued to an MDF sub-baffle?
                        A mains
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                        • #13
                          Re: Problem with solid wood baffles

                          This looks like one piece side slab cut with a large amount of sap wood which IMO is not very stable.
                          John H

                          Synergy Horn, SLS-85, BMR-3L, Mini-TL, BR-2, Titan OB, B452, Udique, Vultus, Latus1, Seriatim, Aperivox,Pencil Tower

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                          • #14
                            Re: Problem with solid wood baffles

                            Anytime you use hardwood you should go into knowing the enclosures are not going to last forever. I have built several hardwood enclosures and I know they may split or crack. If I can get 7-10 years out of it I am satisfied.
                            "A dirty shop is an unsafe shop, if you injure yourself in a clean shop you are just stupid" - Coach Kupchinsky

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                            • #15
                              Re: Problem with solid wood baffles

                              Originally posted by Sydney View Post
                              I was given these cabs made out of solid walnut
                              Note the crack that extends the entire length of the baffle
                              [ATTACH=CONFIG]54911[/ATTACH]
                              [ATTACH=CONFIG]54910[/ATTACH]

                              A cautionary example of what could happen.
                              How wide is that baffle? I've had an oak baffle split on me at 9" wide, but had good luck with baffles narrower than that.

                              Dan
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