1) As the electrolytic the Nichicon “Muse” KZ line.
2) As coupling caps and the Jensen's paper-oil cooper.
3) As the crossover caps Jensen's paper-oil cooper or “Muse” KZ with an active basing.

Those caps did not let me down so far. Both Muses and Jensens must me proporly broken-in.

Nichicon “Muse” are very none-glitzy, none-overly-impressive (courtesy to the OTLs), none high-endish (unfortunately to the audiophile zombies) and «нe бросkиe”. If you plane to use them the “the quietly” should derive form the intelligence of circuitry but not from the sounds of the “specially voiced” components.

*** > “Muse” KZ with an active basing.
Не залезал еще вовнутрь. Попробую.

The properly implemented active biasing can deliver VERY interesting result and particularly at crossover high pass applications. If you have a serious horn then I would subject to try.
Romy