With those values, worthwhile improvements will be out of this world price and massive size would require outboard crossover.
Perhaps upgrade the speaker to active is a better move?
Changing 100uf cap
Dear friends after the pre and the amp have been caped with the jupiter Iam interested in changing the caps of my speakers also they are all 600vdc but the issue is they are large values like 22uf, 8.2uf,33ufand the biggest 100uf all of them are the Audyn Q6 caps can we do better and what brand will be sensible as they are huge value it will cost a bomb your feed back will be really helpful.