JDUBS,
I wouldn't recommend the Jensen PIO capacitors for a Felica power conditioner. Extended foil construction have many things going for it, but they lack the self healing capabilities of metalized capacitors and are likely to self destruct is used accross the line with full mains AC voltage accross them because they could well be subjected to spikes >2,000v. They'd probably be fine as the the betwixt and between (between the 2 transformers) where they'd be subjected to nominally 14vac, but the 18uf cap would be ridiculously expensive. You could use a far smaller one as a bypass of that larger capacitor, but even that would be very expensive.
The intent of the Felicia project was to take advantage of low cost surplus transformers, that were available for less than $10 each, and to allow a DIYer to construct a conditioner competitve with commercial units in performance, but at lower cost. Yes, I used expensive 600v .47uf and smaller Auricaps (which are self healing metalized caps) for bypass duties, but those are quite a bit less expensive than the Jensen PIOs.
Using appropriately rated Jensen PIOs for their intended role of signal coupling is a subjective call....
FWIW,
Paul
