[bit of an odd request for this sub, but considering how Japan-specific USEN is, this seems a better option than more general electronics subs.]
Flat (/building?) has a USEN 440 system that plays music through a bunch of ceiling-mounted speakers:
https://imgur.com/a/b7tFX1A
My hope is that there’s a somewhat easy way to rewire it, so I can hijack the audio out, and plug a Bluetooth amp instead of this apex of Showa technology.
So far, however, the wiring looks a bit opaque (I’m not even 100% certain this is where the audio cables run through)…
Has anyone ever played with that kind of electronics? Any recommendation/opinion/tips?
[Edit: More pics https://imgur.com/a/cNXDejl ]
by zedrdave