Truckin' on a budget
what kind of wood should i use that will sound the best
that doesn't mean plywood is weaker, the way the sheets are laminated together in ply gives strength without the added weight. imo the extra density of mdf isn't needed in a system that won't play over 155db, any more than that and you'll need every little bit you can get.dB Zac said:MDF is used because of the weight!! Strength is a factor too but its the combination of strength and weight that make's MDF ideal.
that's the downside of living in BFE, the mdf has to be ordered at an extra expense to the lumber yard and myself.93ex said:holy crap! mdf is like 21 bucks a sheet here
Ply or laminated wood is vary strong, it can flex without braking far better then MDF thats why they build skateboards out of it. Those aren't really traits we need a box to have. Any vibration can and probably will cancel out some of the sound waves, sound waves we want weather it is 155 db or 125 db. The shear mass of MDF or even HDF will help to resist vibration and thats what we want. If Weight is an issue then yes ply wood is a great alternative, but it isn't with out compromise. PA systems use plywood for there speaker cabs for the weight issue, but in a car the difference in weight will hardly be noticed.Crazy J said:that doesn't mean plywood is weaker, the way the sheets are laminated together in ply gives strength without the added weight. imo the extra density of mdf isn't needed in a system that won't play over 155db, any more than that and you'll need every little bit you can get.
Mine's like 17.5x45x10. I might brace it in the middle now that you say that.dB Zac said:no, the bracing is a separate issue. Thats great that you screwed it together and as far as the splitting goes, thats just something that you have to get a feel for how to ovoid. The bracing is for when you have large areas of wood that has no support. Say you have a box that is 14x14x30. You prob will not need to brace the 14x14 ends but those 14x30 pieces will need some added bracing, especially the side with the speaker holes. You may not even know you have a prob, I had a friend that came to me saying that he knew his system should be louder. I looked at his box and asked him if he had braced it, he said "what". So I had him crank it, them I stood on the longest piece(yes stood on it) and it got louder. Now he braces all his boxes....