Hello! I recently purchased one of your aux adapters. I would love to incorporate it into the radio like you have, maybe on a rainy day.
Regardless, I've become quite obsessed with this radio as well. My first purchase was intended as parts but I went ahead and preformed a full recap, replaced the neon bulb and freshened up the cabinets and she preforms quite well, aside from the fine tuning not working.
I was pretty content but not long after I saw one listed that included a second speaker. I have read quite a bit about the model 13, but nobody ever talks about just the model 8 with a second speaker. Have you come across these? I'll be curious to know if the schematic is similar. If two speakers can be hooked up, wouldn't that technically be an 8 ohm load (assuming the speaker is 16 like I've read)
