As a longtime wood worker, I urge you to worry less about the kind of wood and focus more on the construction. It is important to note that laser interferometry tests proved that vibrations from the woofer can move the cabinet 1000 times greater in excursion than the dome of the tweeter.
Use a good hardwood that works with your room and speaker decor. But most of all, make sure it keeps that cabinet from moving and does not vibrate! Also, make sure you don't misalign any time alignment between satellites and woofers.
With all that being said, you might look at walnut, beech, or kingwood as these woods have a history of stability. There is a reason why walnut is the choice wood for gun stocks where small amounts of movement alter the point of aim. Don't over look Finland birch plywood or even OSB as these laminated woods are extremely stable. You will need to cover the OSB with a veneer of some sort, though. The birch ply may be acceptable as it comes.
Use a good hardwood that works with your room and speaker decor. But most of all, make sure it keeps that cabinet from moving and does not vibrate! Also, make sure you don't misalign any time alignment between satellites and woofers.
With all that being said, you might look at walnut, beech, or kingwood as these woods have a history of stability. There is a reason why walnut is the choice wood for gun stocks where small amounts of movement alter the point of aim. Don't over look Finland birch plywood or even OSB as these laminated woods are extremely stable. You will need to cover the OSB with a veneer of some sort, though. The birch ply may be acceptable as it comes.