Thanks, I cant find any of directly before and after break in. Can you direct me to some please?
For those not fortunate enough to have access to CNC machine, I’d recommend investing in something like the Jasper precision circle jig. Its only downside is that it’s calibrated for 1/4” straight shank bit, so the rebates for wide flanges such as the Alpairs will take more than one pass. I had a shop made compass jig that allowed me to use a Porter Cable 690 router outfitted with 1/2” shank 3/4” diameter mortise bit, which was more than enough for any of the MA drivers.
actually, this one looks interesting https://www.google.ca/aclk?sa=L&ai=...JKG9pT5AhVSIH0KHeRCCYEQ9aACKAB6BAgBEE8&adurl=
actually, this one looks interesting https://www.google.ca/aclk?sa=L&ai=...JKG9pT5AhVSIH0KHeRCCYEQ9aACKAB6BAgBEE8&adurl=
No such thing...sorry, i though we talk about drivers in general. T/S parameters change no doubt about it.
Yeah, I was indeed talking about MA drivers specifically.
My thoughts re the prescribed fussy break in regime are that the drivers are prone to deform if they get the same wubwubwub treatment you would give a subwoofer or other stout driver.
General driver break-in discussions are too contentious to touch. There is data in all directions out there and we should all make our own minds up.
My thoughts re the prescribed fussy break in regime are that the drivers are prone to deform if they get the same wubwubwub treatment you would give a subwoofer or other stout driver.
General driver break-in discussions are too contentious to touch. There is data in all directions out there and we should all make our own minds up.
The only data i have is listening to pairs of speakers identical but for the length of break-in. Differences were significant and starkly noticeable.
dave
dave
That's not data 🙁
I'm surprised that in all the years you haven't made measurements of before and after.
It is data, it is just not objective data (unlike EnABL no double blind tests)
I do not show most measures i make, i have “trust your ears” as a mantra, measures are open to interpretation and are such a small part of the final response it gets too heavily leaned on. Most of the really important stuff that is revealed as a good FR driver breaks in are very small in terms of amplitude and do not show up on a gross FR measurement. One would need to measure what is happening 20-40 dB down and that has proven to be a measurement problem that has not been solved yet.
One of the small things that appears are those tiny bits of information that allow for the creation of a realistic soundstage/image. How do you measure that?
As Toole says:
dave
I do not show most measures i make, i have “trust your ears” as a mantra, measures are open to interpretation and are such a small part of the final response it gets too heavily leaned on. Most of the really important stuff that is revealed as a good FR driver breaks in are very small in terms of amplitude and do not show up on a gross FR measurement. One would need to measure what is happening 20-40 dB down and that has proven to be a measurement problem that has not been solved yet.
One of the small things that appears are those tiny bits of information that allow for the creation of a realistic soundstage/image. How do you measure that?
As Toole says:
dave
There is nothing like the eye opening affect of a listener hearing new things for the first time. An experience that cannot be duplicated by talking about it or showing data.
dave
dave
Some years ago, I recorded some songs in order to go to Montreal to shop for new speakers.
I went to 3 shops. Only in one of them, the last one, I said to myself: This song that I know so well has strange sounds in it ! It does not sound right. So that day I concluded that this shop was problematic.
Many days later, I realised that the songs I recorded were MP3s at 128 kbps sampling. 😳
Is this what we call a double blind tests ? Later I was told that their demo room was an ancient recording room. 😍 I was listening at top quality gear also.
It is tough to make good conclusions. (How about the two other shops ...)
Walter
I went to 3 shops. Only in one of them, the last one, I said to myself: This song that I know so well has strange sounds in it ! It does not sound right. So that day I concluded that this shop was problematic.
Many days later, I realised that the songs I recorded were MP3s at 128 kbps sampling. 😳
Is this what we call a double blind tests ? Later I was told that their demo room was an ancient recording room. 😍 I was listening at top quality gear also.
It is tough to make good conclusions. (How about the two other shops ...)
Walter
