Hi Eanders4,
Thanks for the post and welcome to the community!
Which Bose system do you have? Let me know, and I'll take a look to see if we made a 12v adapter for it.
Best,
Brandon - Community Support
Did you ever find a solution to this? I am also looking for a 12 volt adapter to run the sound bar on my boat. it looks as if the power in to the unit shoud be 20 v so I am looking for a 12 to 20v step up converter too.