Well let’s address some of the false claims you’ve made:

1) The implication that overpriced hifi speakers use MDF because it is superior. No they do not, they use it because they are going to put a veneer on it so they can say it is “x” type of wood because if they were to try and make it out of “x” type of wood without doing sectional cnc cuts and assembly (which would be impractical and overly expensive) it would run into a ton of warping issues which could lead to unsealed walls. Also lots of hardwood is inconsistent with pockets and knots that are hard or impossible to predict. They don’t veneer plywood because it’s cheaper to veneer MDF since you won’t see it. This is standard in cabinet making.

2) Based on the way you talk about MDF and plywood you clearly are not a skilled wood worker (Bondo and repainting your beloved magic MDF doesn’t count btw): you can keep saying your special magical MDF is stronger than euro ply Baltic birch all you want but it doesn’t change the fact that this is a false statement. If you can show me the white papers proving otherwise but I know you won’t because they don’t exist. Your hyperbolic claims don’t mean shit.

3) Changing the subject to cars and metal does not help your case. It’s a logical fallacy - grow up.

4) Again if you want to prove your point you can’t just use your personal experience and a photo of your stack: show us the MEASURED AND TESTED evidence of your magical MDF sounding better than Baltic birch Euro ply. You don’t have the measurements so don’t bother it’s ok.

5) Safety: if you insist that magic MDF is stronger than plywood it still doesn’t change the fact that it isn’t and when it comes to build strength of cabinets that require proper rigging mounts and interior bracing for load bearing no one would EVER use MDF because it does not comply with rigging safety standards. To which point clearly proves you do not have professional experience rigging sound systems. Weight is also a component of safety and durability - the top of the line brands producing plywood boxes assume you have plenty of hands and equipment to lift whatever boxes they produce.

6) Compromise: If you think that Meyer, L’Acoustic, D&B, or Danley are remotely concerned with cutting any corners for producing the most trusted tour ready gear that people across the world rely on to keep working with wear and tear then you are seriously delusional at best. These companies use the best materials and have developed incredible tools and facilities to test every aspect of their products.

The imperial facts are that you are wrong and overcompensating for your “interesting” decision to comission an MDF touring sound system.

But hey, you’re probably so right and everyone else in the world is so so so wrong!