Hi Charles
It is nice to talk to you after all this time!
Glad to hear your Duelund CAST have worked out long term! My CAST in the speakers or my RS or VSF have never been a problem.
Only in the amplifier itself which is of course much higher voltage and heat. (being a tube amp)
Now the caps I used of course were all rated for that voltage. By far the most problems were with Jensen caps and all of the damage was with those caps.
I would have to go count my cap total but it is well over 30. Maybe 40+ :) It adds up!
When I am finished breaking the CAST Tinned Copper in it is going to be about the LONG break in!
I started to hear some improvement at around 100 hours and that got me thinking and I went online and saw a post on here from Grannyring talking about the 400 hour break in. I knew it with CAST (more than RS or VSF) but never changed a whole amp at once. That was HUGE change. I would often change one or maybe two at a time. Not the whole amp!
How long did you find the break in to be in speakers?