I plan on putting feet on it to get it off the floor a bit. With the xlv freeboard I should not have to worry about waves over the bow.... Famous last words.
Why would the resin not protect the wood. I was told it would waterproof it.
Printable View
I plan on putting feet on it to get it off the floor a bit. With the xlv freeboard I should not have to worry about waves over the bow.... Famous last words.
Why would the resin not protect the wood. I was told it would waterproof it.
I'd build it out of ply as well. Go that route first and save some headache. Moisture is a beast...it gets where it wants when it wants.
jm,
Polyester resin is micro porous. Epoxy resin is a little better. If your boat had no gelcoat coating to seal the resin/glass hull it would sink like a rock.
You can build a resin-coated mdf box and run a hose over it continuously with no problem....IF drainage is part of the equation and if the box execution is perfect, ie; no seams, no staple/nail/screw depressions, radiused edges, etc. But a boat is a little different. It's a sauna under cover with a little moisture in the bilge. With a rare roller over the bow water gets everywhere. If the box sits on carpet you have a mold and mildew trap that will wick up moisture through any coating and will eventually delaminate even the best grade of solvent based ply. Don't use automotive carpet in any case as it will hold moisture. If carpeting use only a marine grade mildew resistant rubber-backed carpet. Again, the materials are important but the construction and installation details are critical in any case.
David
Earmark Marine
David,
Thanks for the input. I can change the materials. Should I go plywood instead of mdf?
Will the sound be audible in differences. What does earmark use on there sealed boxes for material.
We use resin-coated or polyurethane-coated (real bed liner) mdf with all the disciplines that I described and quite a few more. We have products in the market that have not failed since '98. As an upgrade we use MEDEX which is a solvent-based construction fiberboard. The MEDEX has greater water resistance and holds screws better than standard mdf. Either is highly acoustically inert. MDO, a ply product, is the equivalent of the MEDEX. I would still coat anything. If you use 0.75" stock I cannot see how the sound will differ. Again, focus on the execution of making a perfect box no matter what you use. No caulked holes to pass the wire. Elevate the box. Build in drainage and evaporation. No automotive carpet. etc.
David
Earmark Marine
got it drainage of the boat with clearance vs the internal speaker drainage.
Thanks gain for chiming in on this..
For elevation use hockey pucks they are cheap, easily accessible and durable.