Quote from Øyvind Kvålsvoll on 26/05/2021, 23:29
Posted this on another forum a year ago:
Speaker break-in is very real and very measurable, but in most cases will still not be audible.
The magnitude of break-in effects depends on the construction of the speaker drivers. Some does not change much at all, others can show significant changes.
Bass drivers tend to soften up in the suspension after some heavy use, this can change bass roll-off slightly, after some use the q gets a little lower.
Break-in can also affect distortion, because suspension stiffness characteristics affect distortion. If this is the case, it is also measurable - of course. Most drivers are not affected, but some are.
For any break-in to occur, there needs to be movement in the mechanical parts, so running measurements at low signal level is not going to change anything.
Changes in suspension stiffness can show up in the frequency response if the changes are large enough. If distortion is affected, it is likely that this can be seen as a significant reduction of high order harmonics.
I may find some measurements that shows changes in distortion comparing new and used drivers, I have them somewhere.
Posted this on another forum a year ago:
Speaker break-in is very real and very measurable, but in most cases will still not be audible.
The magnitude of break-in effects depends on the construction of the speaker drivers. Some does not change much at all, others can show significant changes.
Bass drivers tend to soften up in the suspension after some heavy use, this can change bass roll-off slightly, after some use the q gets a little lower.
Break-in can also affect distortion, because suspension stiffness characteristics affect distortion. If this is the case, it is also measurable - of course. Most drivers are not affected, but some are.
For any break-in to occur, there needs to be movement in the mechanical parts, so running measurements at low signal level is not going to change anything.
Changes in suspension stiffness can show up in the frequency response if the changes are large enough. If distortion is affected, it is likely that this can be seen as a significant reduction of high order harmonics.
I may find some measurements that shows changes in distortion comparing new and used drivers, I have them somewhere.
