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Need help building marine speaker boxes??

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  • Need help building marine speaker boxes??

    Hey fellows,

    Has anyone or does anyone know what material I can use to build two separate speaker boxes for 10"inch speakers. I can't use particle wood beacuse it would soak up the water and eventually fall apart. The boxes are only going to be about 14"inches wide by 8"inches high and about 8" inches deep.


    Thanks,
    Angel

    2007 Larson Senza 206 5.0GL I/O Volvo Penta 220hp
    EZ Loader Trailer
    2008 Nissan Pathfinder


  • #2
    Re: Need help building marine speaker boxes??

    How about a marine grade plywood and marine carpet covering?

    Basically build them like the floor in a boat would be constructed.
    --

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    • #3
      Re: Need help building marine speaker boxes??

      Devnull,

      Where would I be able to get marine plywood and carpet? Also would that would effect the sound of the speakers, I know that particle wood is mainly what is used because it helps the speakers get their full sound and not so empty of hollow. Have you used the marine plywood for any speakers?
      Angel

      2007 Larson Senza 206 5.0GL I/O Volvo Penta 220hp
      EZ Loader Trailer
      2008 Nissan Pathfinder

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      • #4
        Re: Need help building marine speaker boxes??

        Are you sure particle board isn't just used cause it's cheap.

        On profession speaker cabinets they always use expensive ply, never particle.

        Thats kind of the big give away if it's low grade junk or not.

        I'd just use some cabinet grade ply from home depot etc and glass it so it's sealed.
        sigpic1982 Baja 16ss

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        • #5
          Re: Need help building marine speaker boxes??

          I made a set of enclosures from a round carboard tube, the tubes they use for concrete forming (lamp post bases) you have to paint them with resin to make waterproof.
          '90 Chaparral 2000SL
          5.8 Cobra
          '67 MFG Westfield Regal
          80hp V-4
          (No private messages)

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          • #6
            Re: Need help building marine speaker boxes??

            MDF (not particle board) is preferred because it has good qualities for a speaker enclosure, solid through out, uniform density, good dampening, etc. I'm sure the same holds true for expensive plywood since it has no voids and a high number of plys. Both can be used, though MDF will swell up like a puffer fish if water gets on it. But yeah, particle board is junk for building a speaker enclosure.

            If it were mine I'd use Arauco plywood (lowes) and then seal the carp out of the exterior and edges to make sure everything is sealed 100%, including all screw holes. Cheap, but still a good quality plywood.

            I like A70's idea also, though I have never tried those cardboard form tubes. Could cause some funky resonance or ringing since the cardboard is so hard.
            2001 Crestliner SuperHawk 1800, Mercruiser 140HP
            2007 Tracker 1436 jon boat, 7.5HP Force

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            • #7
              Re: Need help building marine speaker boxes??

              I would think you could use the fiberboard and once you are finished with construction paint with good oil paint or seal them with some thinned resin, then carpet or whatever you were going to finish with. I agree that they could swell if un treated but if they were sealed up well would work fine. How much water are you going to be getting on them? Use the quick connectors and remove for winter or layup and you should be fine. Some of that plywood is way expensive just for a carpeted speaker box. Put some of those little rubber feet on the bottom corners so air can move around it.

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              • #8
                Re: Need help building marine speaker boxes??

                subwoofer enclosures are either made out of mdf or fiberglass.
                same with "external" speaker boxes.
                CrankyBaits Custom Painted Lures

                1981 Sylvan Sportster 16' 1985 Evinrude 70 hp

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                • #9
                  Re: Need help building marine speaker boxes??

                  you could use anything you want as long as you seal it with fiberglass resin.
                  2000 - bayliner 2455 s s minnow MMSI# 338088201

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                  • #10
                    Re: Need help building marine speaker boxes??

                    I agree that MDF is going to give best sound quality.
                    I also agree that MDF and water don't mix.
                    My first thought of a comprimise was a thick plastic - Corian perhaps, or even fiberglass. For that matter fiberglass over the MDF.
                    You could also use a solid wood which is dense and more water resistant than MDF - Mahogany, Teak (how deep is you pocket?), perhaps even red oak.
                    sigpic
                    Nothing is so broken that Government can't make it worse.

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                    • #11
                      Re: Need help building marine speaker boxes??

                      Ever think about the newer composite (plastic) wood, being sold for decks?

                      Easy to work with, gray in color, can be screwed together, definitely weatherproof....

                      http://plasticlumberyard.com/

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                      • #12
                        Re: Need help building marine speaker boxes??

                        From my speaker building obsession days, MDF is the prefered material for most full freq range speakers. For subs, where the wavelengths are longer than any of the box dimensions, shear stiffness of the panel is more important. ie void free plywood is better. A well built home sub would have two layers of 3/4" plywood, or 3/4" plywood ext with mdf on the inside. Weighs a ton, and you don't move them very often.

                        Now, back to reality of the boat, where audiophile acceptable sound will never be achieved: a good compromize of weight vs stiffness, would be to use 5/8 ext plywood, with some internal bracing. Seal the boxes on the inside and outside to prevent moisture penitration. MDF would be extremely hard to seal, and keep sealed, on the ends. It is also heavier than the same thickness plywood. Lightly fill box with Acousta Stuff.

                        I have made sonotube subs and speaker enclosures, but different mfg of the tubes have different coatings. The unsealed ones would have the same problem as MDF to keep them sealed.


                        http://madisound.com/

                        http://www.parts-express.com/

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                        • #13
                          Re: Need help building marine speaker boxes??

                          Hey I totally disagree with MDF giving the best sound quality.

                          I don't know of any pro speaker cabinets made of MDF.

                          From critical listening studio monitors to PA to guitar/ bass cabinets none are MDF.

                          You only find that in consumer goods.
                          sigpic1982 Baja 16ss

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                          • #14
                            Re: Need help building marine speaker boxes??

                            My brother has JBL pro speakers and subwoofers.

                            this is what they are made of.
                            Dense material such as void-free "marine-grade" plywood, Finnish or Baltic birch type, 19 mm (3/4 inch) or even
                            thicker plywood is recommended where enclosures will be transported frequently, while high-density fiber or
                            particle board (not chip board) can be used for permanently installed use.
                            CrankyBaits Custom Painted Lures

                            1981 Sylvan Sportster 16' 1985 Evinrude 70 hp

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                            • #15
                              Re: Need help building marine speaker boxes??

                              Pro and guitar speakers are not designed for critical listening. They are designed to handle the harsh environment. Hense, why they are mainly made from plywood.

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