Hello Volleyguy1,
I replaced all caps in the secondary paths (except on)of the 4-way crossover and they sound good. I have not done a direct comparison with the Cast which are in primary path. The exception was a Duelund Cast Mylar 220uF in parallel to the 15" drivers, replacing a Solen, and the Cast Mylar sounds better.
As suggested in this forum, I changed all resistors from Duelund Cast to Path Audio and noticed an overall improvement, just sounds more real. Quite happy about it.
Cheers,
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