Hello Paul, the audiofool speaker wire I used is very pliable even at
room temp. I tried it as it's a twin (bonded) flex, so no need for an
outer sleeve to bond the two tight together. I found a shrink
tube wrapped 2 individual flex amalgam was hard to work unless heated.
I feared for snapping the toroid with too brute force an approach.
Once pulled really tight the interference fit centre plastic bobbin
held it tight.
Tuesday, April 10, 2018, 1:22:15 PM, you wrote:
> Jay,
> I have no reliable way to measure capacitance. The ones I used
> originally were NOS Sangamo caps. The physical dimensions are the
> same as I find listed for DM19 caps. Last night I swapped one out
> for a CDE of same length and height but thicker. Zero measurable
> change in ringing. I put squares of thin shim stock under the
> grounded lead of each snubber resistor so that now lead length is
> basically zero. Absolutely no measurable change in ringing.
> I was just curious whether the fact that changing cap values has an
> affect might point us toward something we're somehow missing.
> I will find some of the Russian mica caps for a try at some point.
> Meanwhile I'll find some smaller lamp cord and try once more. To be
> honest I'm not at all convinced my secondary winding is tight enough
> either. In places it can be manipulated a bit while the amp is
> operating at low power. Doing so makes an easily observable change
> in the ringing. If there is a technique for getting that first
> winding any tighter, it's one I haven't yet learned!
> Paul
--
Best regards,
Chris mailto:[email protected]
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