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In the Forum: Audio Discussions
In the Thread: Initial thoughts about new/old Lamm ML2s
Post Subject: The coupling caps in ML2?Posted by Romy the Cat on: 2/14/2010
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 Paul S wrote:
Does anyone know the voltage the big couping caps actually see?  Yes, I should measure it, but I would rather avoid the drill of opening the amps, propping them up somehow and measuring if someone already knows the answer. Of course, I'm asking in order to get new caps in the correct rating.
They are 400V-450V, I do not remeber exectly. The 6N6P most likely sit at 200V and 6C33C at 170V, so the 400V shall be enough.  The ML2 has double sided board and it might be a bit tricky to solder it.  If I were you then I would not remove the current caps and would not remove the board.  Cut one lead of the current caps in the middle. Then put the new caps in parallel to the uncut lead and to the lead that will be sticking from the board. Do not overheat the sticking leads as it might unsolder them. Be advised that it would take 2-3 weeks a cap to burn in. Also, confirm if ML2 has fist and second stage cap coupled and if it does (most likely) then you need to replace them as well. What cap will you will try to use instead the Lamm’s Cubes, the Duelund?

The Cat

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