I’d be curious if McIntosh supports their legacy products as much as you suggest, but then McIntosh ain’t quite the company it was under Frank McIntosh and Gordon Gow.You just outlined the reason I'm so loathe to buy a Revel speaker. They simply don't support their legacy designs. The contrast with a company like McIntosh is glaring.
Example that isn’t McIntosh: Naim Audio also boasts that they can service and repair virtually everything they’ve ever made. I have a CD-5 that has failed. Can I get service information—even just a schematic? No. I can send it to their authorized service center, who has already told me they can’t service most things on a CD-5. This is for mostly discreet electronics. So, the promise isn’t always actionable.
(That can get me started on a right-to-repair rant
Rick “wondering if speakers are a lot harder to support in perpetuity than electronics” Denney