@roxy54 , Thicker veneers will snap if you try to bend them across the grain. In order to make them pliable enough they have to make the veneer tissue thin and laminate it to something with more tensile strength. In most cases this is a cheese cloth type fabric. It even comes with pressure sensitive adhesive applied to the fabric side The best wood construction for speaker enclosures uses properly mitered cabinet grade plywood which already has a thick veneer applied. You can order plywood with just about any wood veneer you care to think of. If you look at my system page you will see me make a cabinet in walnut plywood. Plywood is stiffer and more durable than MDF. Used properly it makes a much better enclosure. The problem for manufacturers is that plywood is more than three times as expensive as MDF and you have to be very accurate with your joinery or it will look awful. Wood is actually very difficult to work with. Many of the top manufacturers have shied away from it using anything from composites (Wilson) to Aluminum (Magico)
In my world the only application for an enclosure is for subwoofers. The ones I am currently building are made of 1.5" plywood. Each one has ten sides and each side is only 5" wide on the outer face. Because my system doubles for theater duty they will be finished in satin black polyester. The frame of ESLs can be made of just about anything. The sides of my Soundlabs are shou sugi ban solid white ash.
When you see a veneer wrap you can bet that there is MDF below and relatively crude joinery. It is just the same as wrapping a cabinet in carpet. It is easy to hide the workmanship.