B1 Rotate the Logos
You can rotate the Bose logo so it is parallel to the floor even if you have turned the B1 on its side. Chuck-at-Bose said, "... Maybe it's my kung fu grip, but I've had good luck with carefully pinching the logo and pulling at these points, then rotating 90 degrees:"
Be very careful with the fine ends of the logo because they can be easily broken off. You may even try to pull up in the middle with your fingernails on the edge instead of near the ends.
Pull the logo straight out about ½ inch before you attempt to turn it. It is spring loaded, and the rear post is square. You have to clear the post (about ½ inch before you can turn it).
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Pull straight out
Another look. The hole behind the logo is square.
Make sure that the logo is flush with the grille so that it does not rattle when the music is playing.