Aaight. Nobody answered (in 24 hrs) which is not really something to complain about. But for the sake of internet searches and troubleshooting on this issue in the future I find it pretty antisocial not to post the fix to my initial issue. So- The tweeter had shorted- measuring at 0 ohms. (Real bad ChatGPT told me, when I was super specific about the problem) but the thing is- the thermal protection light will stay on- (orange light=paperweight) also when the specific speaker, in this case the tweeter is disconnected from the unit. But listen up noobs! Yeah! I’m a retardo when it comes to this crap- but empirical evidence doesn’t lie- the freakin’ light turned green when I connected a shitty Sony speaker (thrifted it today for 2£ to test this brain fart) instead of the messed up tweeter. the answer to my initial question of how to make sure that the speaker is the only issue is= use any crappy speaker that will put up a resistance of 6 ish ohms- and the green light will confirm your if this is the only issue. I would like to dedicate this discovery to all of the gatekeeping autistic douchebags that feel the urge to point out how obvious this is. nobody bothered to write this- and I KNOW that I’m not the only idiot who had this problem. So if you think that this answer is obvious: shame on you! - there is about 50 million (approximately) posts on the issues- and zero guidance on this rather lo-iq solution.   and by the way- the beolab 7-2 is insane. Even with the shitty Sony tweeter as a placeholder, well worth the frustration of coupling and fixing- and the thought of these things just getting dumped as the sidekick of the outdated TV it was originally paired with makes me queezy. Gatekeepers suck- post the fix or choke on your own hairy nutsacks. Anyways- hope this helps someone.