Burn in discs vs. music for new speakers

Hope after 20 years those speakers are burned in!

He might have new drivers to break in.
As they get problems when old, the magnet/coil gap has very little clearance and can scrap/pole after a while if the drivers are not rotated 180 degrees every couple of years to counter the sag.

Cheers George

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).

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.   

The above doesn’t include down-firing woofers, such as might be found in a Leslie, or subwoofer system. I have seen those sag.

Front firing,the top of the bass driver sags/leans forward and causes polling, Kef B139’s were known for it, so were my Kef B1814 bass driver and also I believe Lowther drivers had very tight magnet/coil gap and needed to be rotated every now and again.

YEP: another 20 yo zombie-thread (as Ralph calls them), resurrected by someone with nothing better to do.

At least back then there were a lot less snake oil  fuse and hrt etc etc voodoo threads
 Burn in for speaker suspension pliability/compliance is a real thing


Cheers George