Re: Do recones need a break-in period?
Here's what Klippel (the guys that make the test sytems mfrs & engineers use...) has to say;
http://www.klippel.de/download/bin%5...easurement.pdf
The meat is in the last 2-3 pages (complete w/graphs & charts). Note the reference to non-linearities due to compliance changes... when "broken in", the suspension actually becomes stiffer at travel extremes, but more compliant at lower excursions.
But it's just a brief change... at times on the order of seconds. Therefore, it's not a permanent thing like we normally think of as "break-in". I like to think of it more as "warming up".
Added;
For those that never push their woofs anywhere near Xmax, it's a non-issue. ;)
Re: Do recones need a break-in period?
Quote:
Originally Posted by
bfish
Added;
For those that never push their woofs anywhere near Xmax, it's a non-issue. ;)
Ahhhhh..... So we only needed to break in our woofers!
Re: Do recones need a break-in period?
Quote:
Originally Posted by
Nipper
Ahhhhh..... So we only needed to break in our woofers!
Well, the topic is "Do recones need a break-in period". What else get's reconed? :confused:
To be fair, anything with a typical spider.
But...
I'm not saying anyone should breakin their woofers for listening purposes, only for measurement and design. Actually, since a suspension that has loosened up is generally less linear than one that hasn't, why would anyone do it at all...:D
Re: Do recones need a break-in period?
Quote:
Originally Posted by
bfish
Well, the topic is "Do recones need a break-in period". What else get's reconed? :confused:
Dont tell anyone but I had a set of Infinity speakers once and they had a designated midrange speaker. ;)
Please dont take me to serious on this topic Bfish.... Just having fun. :D
Re: Do recones need a break-in period?
Quote:
Originally Posted by RonSSS,RonSS
When I got my reconed 411-8A's back from GPA, I measured the TS parameters. They were not close to what Altec spec'd......so I set one on the bench and ran it with a 10 hz sinewave, about a 1/4" excursion for 2 days.
Re-measured...no difference.
I think driver break-in is bs. Sorry.
Ron, I'm curious about what Bill is providing as a 411 recone substitute .
I realize your 411(s) were the first pair that Bill did ( now a few years ago ) .
Did you by chance keep a record of their TS parameters ( as measured back then ) ?
Specifically, I'm wondering if you measured BL, MMS and/or ( attempted to get an accurate ) VAS ?
thanks <> EarlK
