Upgrading crossover caps in a PSB Image 5T

I've got the bug to tinker with my speakers. I've heard that upgrading the caps in the crossover can really change things for the better. I'm sure the PSB Image 5Ts are very budget minded in their use of parts, so I'm thinking of doing some simple mod like adding Auricaps.

Soooo ... I open up the speaker and I don't see anything that looks like a capacitor (in the traditional sort of way). No barrel shaped caps, nothing that looks like an electrolytic. Anyone have a clue as to what might be going on?