Duelund cast Pio Hybrid Copper/Silver or Rs series with Silver Bypass PIO

Yes it will. Jupiter copper foil will be even better with that wonderful Duelund bypass cap.  

Hi grannyring,

Do you think Jupiter will work better with compression horn driver then Duelund RS?
I mostly listen jazz and classical. I rarely listen rock. I don't listen "junk" electronic and dancing music at all. 
I have 300B SET DIY amplifier (6SN7-6F6-300B).

Regards,
Alex.

Here are my system videos:
https://youtu.be/JtGaPl0e6ek
https://youtu.be/Rm1vN6ohwQc
https://youtu.be/NsdupSrl0LY

I certainly do think so.  I have compared the Duelund CAST to the Jupiter and I actually like the Jupiter even more. It is a wonderful sounding cap.  

I bought Duelund RS for high frequency part of my crossover.
I did some burn-in using Frybaby2.
I like results. Sound is unbelievable transparent! Now my Altec 604 can be compared in this regard to Lowther based speakers.
I have second order LP filter for mid-base driver of Altec 604.

Will changing of capacitor in 2nd order LPF do the same huge effect?
I need 8uF capacitor. Will Jupiter VT Series capacitors good a match for LPF for my Altecs?