Large (ish) thin timber panels would normally be set floating in a grooved frame to allow for expansion/contraction etc, quarter sawn is more stable from a warp/bending aspect due to the elimination of tangential shrinkage due to the way it's sawn, there is radial shrinkage though, it's a lot less than tangential but it will still move, hence the grooved frame, same when laying timber floors, an expansion gap should be left around the edges of the floor, normally covered by the skirting board, same goes for chipboard flooring, if not and the timber or chipboard gets damp or wet for any reason then the floor can blow.
So.... A grooved frame for the panel means extra cost and if it's floating (free to move within the grooves) then mechanical resonances might occur from the loudspeaker unless some form of damping was built in....hence veneer on plywood cheap and effective.
I cut some quarter sawn stuff from saw logs when I was in the saw milling game, not much call for it though in my case, there's a lot of waste if doing true quarter sawn.
This is me slabbing a large lump of Sitka Spruce with my old chainsaw mill, if you look close you can see that I slabbed it just off the quarter, if I had turned that slab through 90 degrees clockwise and cut it into 1" boards then the second board up from the bottom would have been a true quarter sawn board after the pith had been removed.
Lawrence.
So.... A grooved frame for the panel means extra cost and if it's floating (free to move within the grooves) then mechanical resonances might occur from the loudspeaker unless some form of damping was built in....hence veneer on plywood cheap and effective.
I cut some quarter sawn stuff from saw logs when I was in the saw milling game, not much call for it though in my case, there's a lot of waste if doing true quarter sawn.
This is me slabbing a large lump of Sitka Spruce with my old chainsaw mill, if you look close you can see that I slabbed it just off the quarter, if I had turned that slab through 90 degrees clockwise and cut it into 1" boards then the second board up from the bottom would have been a true quarter sawn board after the pith had been removed.
Lawrence.
