darynalexander
100+
will probably give you some sort of disease.
Posts: 179
|
Post by darynalexander on Apr 24, 2007 2:51:26 GMT
No. No I'm not. I mean, I kind of take this "burn-in" thing very lightly. Ultimately, if I listen to something and enjoy it, what's the big deal? I hadn't had that much time to properly enjoy my Canamp that Pinkfloyd so graciously from the edge of disaster.
But now.
A few days ago, I forgot to turn it off. It was left on, the volume dial at around 12 oclock. It wasn't playing any music or anything, just on. Now, a few days later, I come back to it and start playing music and there is a tremendously noticeable difference. Like night and day. The sound is truly amazing.
Someone gets to tell me I'm not crazy now. I'm not stretching the truth because this comes completely unexpected.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 24, 2007 13:30:07 GMT
"The Mythical Burn In" forum.ecoustics.com/bbs/messages/34579/127865.htmlI am not sure that I completely agree with this ,though. There is a whole industry built around "burn in" It is a means to enable manufacturers to weed out faulty devices and products before they leave the factory. "Warm Up Time " is a more appropiate term for domestic audio . Many years ago (1989?) I wrote a letter to the editor of Electronics Australia magazine, asking why, in a home built preamplifier using very closely matched transistors in the differential pair of the input stage, did the sound ,after some period of time suddenly start to sound "sweeter" and with a far better soundstage? On each occasion that I noticed the effect, I took voltage readings, and on each occasion the voltage reading between the collectors of the input pair was <5 MILLIVOLTS !!! Unfortunately, the effect usually slowly disappeared. The editor did not answer the question. These days, the prominent English audio designer Douglas Self, stresses the desirability of close matching of the input pair. However, well matched dual devices like the 2N3811A etc. are no longer readily available, and not many manufacturers go to a lot of trouble to even properly thermally couple the input pair when using 2 separate devices. These days I use special techniques to keep the input device collectors within specified voltage limits. Well designed circuits can be made to reach these optimum operating conditions quite quickly, and stay there. Obviously that is not the complete story, though. Why some modern I.C.s can take several days (or more) to reach optimum audible performance , is a question best asked of the labs people at the semiconductor manufacturers. SandyK
|
|
|
Post by PinkFloyd on Apr 24, 2007 23:07:08 GMT
Also known as a "soak test" where equipment is subjected to an extreme (hot) environment for 24 hours (maybe more, maybe less) and any failures are replaced and then undergo a further soak test..... only when the circuit passes the soak test without failure is it deemed fit for market.
Very few audio companies (none that I know of) soak test these days and just chuck their products out as soon as they get the initial "pass" light in QC...... There's this idea that components are a lot more reliable these days and, thus, no need for stringent QC tests. I don't agree but soak testing is not what this thread is about.
"bed in " and optimal working temperature is fact. Bed in with headphones (or any other mechanical device) and optimal working temperature with non moving parts does make a big difference to the performance whether it be a pair of new gloves, a new car engine, a pair of shoes..... everything needs time to find it's real working environment.
I've found with non moving electronic parts that they can take anywhere from 5 days to 5 years to blossom.... Audiolab 8000A being a prime example, sounded clinical from day one but improved day by day over a period of years.... I have NO doubts, at all, that the sound "changes" with time... there are a lot of chemical changes / interactions taking place continually and these all play a part in the proceedings.... nothing is a "constant" in this environment so, of course, when things shift chemically / electronically things will also shift sonically.... it's common sense and to think that things don't change (be it for better or worse) is like saying the earth is flat. Everything and everybody needs time to settle into their new working environment.
|
|