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Mainline / Re: Mainline Burn In
« Last post by Tabaia on Yesterday at 01:47:09 PM »Thank you Paul J.
Very insightful answer.
Very insightful answer.
Recent Posts
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Mainline / Re: Mainline Burn In
« Last post by Paul Joppa on Yesterday at 05:01:14 AM »Tubes, capacitors, and signal-carrying transformers are thought to be the main ones.
There is good evidence for tubes, as the cathode "forms." It's a long, technical story, poorly understood by most people (including me!).
There is, as far as I know, no proven theory for capacitor burn-in, though there are several more-or-less plausible ones. Mostly it's a matter of observation - many people hear it (again, including me!).
Transformers and plate chokes seem to break in similarly to capacitors, perhaps due to the winding capacitance, though there are other effects like magnetization history.
There is good evidence for tubes, as the cathode "forms." It's a long, technical story, poorly understood by most people (including me!).
There is, as far as I know, no proven theory for capacitor burn-in, though there are several more-or-less plausible ones. Mostly it's a matter of observation - many people hear it (again, including me!).
Transformers and plate chokes seem to break in similarly to capacitors, perhaps due to the winding capacitance, though there are other effects like magnetization history.
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Mainline / Re: Mainline Burn In
« Last post by Tabaia on Yesterday at 01:03:05 AM »Just my curiosity, which components change over time?
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Moreplay / Re: Back again...problems with fading to black
« Last post by Paul Birkeland on June 19, 2025, 03:28:31 PM »Once you have completed replacing that cap, please check the DC voltage at the junction between those two caps and report it here. It is extremely rare for this kind of failure to occur, and it's possible that one of the 270K balancing resistors isn't well connected, which is causing too much voltage to appear across that cap.
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Moreplay / Re: Back again...problems with fading to black
« Last post by Doc B. on June 19, 2025, 01:07:19 PM »You also have a film cap that has a blob of solder on it. If that has melted thru the outer plastic coating you could have a shorted cap. If it just pops off and the plastic underneath looks OK it is fine.
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Moreplay / Re: Back again...problems with fading to black
« Last post by anthonynchandler on June 19, 2025, 09:22:15 AM »Sounds like a plan!
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Moreplay / Re: Back again...problems with fading to black
« Last post by Thermioniclife on June 19, 2025, 09:13:34 AM »Yeah I Would replace and double check for proper polarity.
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Moreplay / Re: Back again...problems with fading to black
« Last post by anthonynchandler on June 19, 2025, 08:40:23 AM »Strep throat is gone, so I am looking at the Moreplay again. As I was just about to redo the solder joints to rectify the fade to distortion I noticed one of the smaller brown capacitors has the beginnings of a bulge. While I doubt that relates to the fading, is that something I should replace asap? If I do I assume I should have to matching ones?
Any thoughts are always welcome.
Anthony
Any thoughts are always welcome.
Anthony
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Mainline / Re: Mainline Burn In
« Last post by Paul Birkeland on June 18, 2025, 06:12:31 PM »Yes, you should find that things open up a bit after 50-100 hours. You can leave music playing into the amp for a few days to speed things up.
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Mainline / Mainline Burn In
« Last post by Tabaia on June 18, 2025, 01:28:34 PM »I just Finished my Mainline build. Very happy with the sound, in fact much more than happy, Mainline sounds amazing.
Does anyone have any views on "burn in" ?
Does the sound improve or sweeten over time?
If so does anyone have an idea of how many hours is needed for it to reach its potential?
Does anyone have any views on "burn in" ?
Does the sound improve or sweeten over time?
If so does anyone have an idea of how many hours is needed for it to reach its potential?