Sgt. Ear Ache
Major Contributor
Speaker manufacturers love to have people think speakers need hours and hours of burn in time. They understand how it works... give speakers time for people to adjust to them and watch the return-rate plummet.
it's awesome that you think it's audible. Someone should prove it is sometime. And is there even any proof anywhere of anything even close to "a few decibels of difference" post-burn in?
The foil will stretch a bit after some time of use..*Headsratch*
What can break in in a elektrostatic speaker?
Your speaker seems to have developed a much less smooth response from 100-1000Hz.I just did a test with my new Final Electrostatic Speaker Model 15.
( I know it behaves different than a standard woofer.. but at least is a proof of 'anything')
I measured the FR when it was delivered (after one day) and after 3 weeks:
View attachment 46071
So this a extension of almost 10Hz in the bass range and 4/5dB level change at 40Hz...
I have not tested if this is audible as I run these speakers with subs normally..
I really wonder if a normal driver would change like this also..
(Would be nice if Amir could do a break-in test measurement with his next speaker coming in...)
The foil will stretch a bit after some time of use..
indeed, I did some close mic measurements that explain this: this speaker is build by 3 vertical segments doing different parts of the spectrum.Your speaker seems to have developed a much less smooth response from 100-1000Hz.
Dave.
The foils are put at a specific tension when being assembled.Why? I thought they get driven with the same force at each point? It's just a question i have no knowledge about es speaker.
The foils are put at a specific tension when being assembled.
I asked the manufacturer of this speaker and he says this tension changes in the first months of use.
That dude knows what he is talking about.
lol...wait, is he calling objectivists "flat earth guys?" Because that's sort of exactly the opposite of the way it is!
And just how are these burn in times arrived at? If we agree that drivers change over time such that their sound is different, why does the process conveniently stop at exactly the right time for speaker perfection? Why does 100 hours of burn in make for a perfect speaker and then that's it for the speaker's life?
What would it be if you measured it twice in a row?I measured the FR when it was delivered (after one day) and after 3 weeks:
Initially higher rate of change? Probably quite similar to a U-shaped "failure rate" chart which shows an initially higher rate that settles down?
In all IMAX Digital cinema locations, once the system is fitted the sound is calibrated with manual intervention. Microphones that were permanently installed in fixed locations in the auditorium are used to measure the calibrated frequency response. Subsequently, the system goes through a daily auto-recalibration process (IMAX nXos -- technology licensed from Audyssey) to match the original calibrated response. (I suppose the stability of the microphone responses could be questioned?)
That would seem to be a reasonable approach?
BTW, how about changes to speaker behaviour caused by room temperature, air pressure and humidity fluctuations... not to mention voice coil heating?
I'd imagine the IMAX process is mostly about just making sure the system is all functioning properly rather than any sort of adjustment for burn in in the speakers.