Correct.
The original fit system has four outputs to each of the four speakers, whether or not the Fiat radio splits the signals I do not know.
In my set-up I disconnected the fiat wiring and wired straight through to the amp then split the signals from there via the crossovers.
The subwoofer again, is wired straight from my head unit to the woofer with it's built in amp.
OK, I'm a bit thick with stereo stuff so I seem to be repeating Jiggy's question. If I buy some Infinity Reference 6010CS and just swap them for the old ones will I have wasted 50 quid?
Cheers.
Johnny