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In the Forum: Horn-Loaded Speakers
In the Thread: Macondo’s Midbass Project – the grown up time.
Post Subject: Recharging the AlnicoPosted by Romy the Cat on: 6/3/2013
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Well I was thinking how I can verify that my midbass drivers had sunk magnets. I can take one of the drivers off; take them apart and compare them with another of my Vitavox 15 inchers. I can measure the magnetic force in the gap and it will be objective. However, no one knows if the other drivers that I have are fully charged and I do not know how much it has to be: 12.5T, 1.4T, 1.6T? who knows, I might call to Vitavox Mike to ask perhaps…
Another option would be to get a devise to read BL, a weak magnet will lower value.
http://www.daytonaudio.com/index.php/dats-dayton-audio-test-system.html
Usually 15-17 would consider low BL and 21-24 high BL. What would be the right BL for the 50 year old driver? Hmmm, who knows…
The most that piss me off in this whole story is that I might get all over it and recharge the driver but the reason why I have more HF from horns then I used to have will be some kind of other little stupid thing the I overlooked…. The recharging the Alnico after 50 year would never hurt however…
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