Hi guys,
I just opgraded the satellites of my Z5500 with something a little more... substantial.
I bought 5 Monitor Audio Vector 10 two-way book shelve speakers to replace the satellites.
They were about 90€ each, but more than worth it. Since they're all 8ohm and about 80w per satellite, the amp integrated in the Z5500 sub is more than able to handle it.
The effect is quite astonishing: definitely more detail in the mids and high's (mostly because of bigger drivers and a seperate tweeter), and also a better bass reproduction from the sat's, not just the sub.
This seemed odd to me at first, as the Z5500 normally have a quite heavy bass cutoff towards the sub, but as it turns out the redirection is much more gradual, it's just that the original sat's couldn't quite handle the sound provided to them because of their tiny 3.5inch drivers.
So to all of you out there who have bought this speaker set, at least consider replacing the two front satellites with a pair of passive bookshelve speakers. The added definition in music reproduction alone is worth it.
I'm not sure how much a standalone receiver and subwoofer would improve things even more, but I'm pretty sure I'll be going along that route eventually.