Originally Posted by ApK

BTW, we moved our gen 1 Dot out to the living room for our holiday party, and just for the heck of it, I tried once again to pair it to the cheap old Bluetooth-adapter on our living room speakers that I was unable to pair with in the past.

Whether because the Dot was moved, or because it got some firmware update, I don't know, but now it paired and worked without issue (and sounded fine).

So if you have failed to pair with some Bluetooth device in the past, it might be worth trying again.