First, be very careful here. Make sure you measure the equivalent series resistance (ESR) and compensate. This is especially important in caps that go to ground. Dayton Audio DATS is the perfect tool for this. Messing these up can create a severe and narrow drop in impedance which moist do not expect.
Next, since the largest caps in speakers tend to be the bass caps to ground they don’t usually get the super deluxe treatment. Axion (Solen) is probably good enough.