On Fri, 11 Nov 2011 09:20:22 -0800, DaveC wrote:

C2, C3 are polarized, so I presume electrolytic?

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I put in polarized from habit, (and, BTW, C2 is in backwards, oops)
but there's no real reason for them to be.

Ceramic or polyester would also work.
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What type should C1 be?

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Polyester or ceramic.

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JF