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In the Forum: Melquiades Amplifier
In the Thread: Bias help
Post Subject: The magnetics taking considerations.Posted by Romy the Cat on: 3/20/2011
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 N-set wrote:
This is what I try to stick to:
Try to create closed magnetic (steel) loops around magnetics. Ideally acompany it
with closed electric (copper) loops. This I think Pieter has done that already for you, but,
as Romy impicite suggests, double boxing will not hurt for sure.

Do not sign me to this ides and I did not “suggested” anything. The closed magnetic loops around magnetic is as good but it also a bit controversial. The torpids radiate a lot of “things” out of the center hole and there is a lot of slippery moments when you try to put a lot of magnetics, unparticular torpid, in a close space.

That would all depend from multiple factors and the biggest of them if the amp will be one chassis of two, In case of two chassis I would go for PS chassis made from other material then steel. If case of the single chassis the thing is more interesting. You would like to pack everything more compact and to have steel chassis but it might bite you for your tail. So, the thinks need to be well thought. If you look at the thread “Building Melquiades: Chronicle of full-range”:

http://www.goodsoundclub.com/Forums/ShowPost.aspx?postID=2502

 …then you will see my idea: to have steel chassis with magnetiks outside of chassis and the signals inside of chassis. With torpid it would be much different of cause. I do not know why Dominik went fortorpid. Torpid has a lot of advantage but it also has a lot of disadvantages, of them that you can’t not flat mount a multiple powerful torpids to a the same steel surface as each of them will arouse different resonances in the same chassis surface and it might be tricky to make the chassis silent, unless one goes for very think mounting surface.

Again, there is nothing dramatic in it and all those things are very addressable. The amp’ chassis however need to be thought and design with considerations “magnetics taking”.

The Cat

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