[masraum]

Originally Posted by jyl

It’s just a wood pantry cabinet. 3/4” ply sides, 1/2” ply back, face frame, inset door. I know I can’t “silence” the Vitamix, but just a little more sound reduction more than merely closing the door.

Got it, so the inside of a cabinet.

Will you be running the blender with the door closed? I assume not. If that's the case, then MLV and some foam that would dampen reflected sound.

If you are going to close the door, then I think a layer of MLV and another layer of 3/4" wood, and the door will have to be sealed with weather stripping (any air gap will allow sound to propagate). But I suspect the missus wouldn't be amenable to any "ugly" mods. I know mine wouldn't.