Burn in discs vs. music for new speakers

SO, Georgie- You’re telling me you have nothing but opinion pieces and anecdotal evidence.      Funny, but- that’s what you're constantly whining about, regarding fuses.          btw: No one, thus far on this thread, has said anything about suspension break-in (or electronic burn-in) not being real.        You just enjoy changing subjects/shifting targets.     You are (somewhat) entertaining to engage in conversation, however, on occasion (good for a laugh).       ie: No one, BUT YOU, ever mentioned fuses in this thread.      Responding to your yourself now?    Skipping your meds (snakes in your head), lately?    

Anyone paying attention will notice; the B139 and 1814 drivers didn’t have a round frame/front suspension.     The Physics of having flat, horizontal, mountings (in most applications), would come into play, regarding sag      But; I never saw any KEFs or Lowthers, in the shoppe, so- what do I know?      Any documentation/evidence, beside your opinion, regarding the typical, round, front firing woofer, outside of those that have been stored in boxes, face down, for extended periods of time?

The above doesn’t include down-firing woofers, such as might be found in a Leslie, or subwoofer system.       I have seen those sag.     Just my own experience (YMMV).        YEP: another 20 yo zombie-thread (as Ralph calls them), resurrected by someone with nothing better to do.   

I bought a $69.00 CD/DVD player and this disc, specifically for burning in things: https://www.amazon.com/Cardas-Acoustics-Irrational-Efficacious-Burn/dp/B00OY8UXME       The disc has Pink, Brown and White Noise tracks, that can be played on Repeat.      They do a great job.      There are six Seimens CCAs, that I don’t want to unnecessarily wear, in my system CDP (thus- the cheapo player).                                                 In the decades that I professionally reconed speakers (as a warranty center for EV, Altec, JBL, Cerwin-Vega, Gollehon, Cetec-Gauss and a Waldom reconing center, in Orlando, FL), I never had a repair come in, do to a sagging suspension (unless they’d gotten soaked in something).