Depends, nothing at the moment but now that the wiring is done, everything is basically a quick swap upgrade. I heard that, like Infinity Kappas, the Focal 6x9 speakers can be harsh up top. Not sure about their bass response but the Polk 6x9's I have now do put out a nice kick and have great clarity throughout the range.
I have the Crutchfield Sound Ordnance 2100 amp (75W x 2 @ 4 ohms) and its rated at 95db SNR for 1% THD. I have no static at low volume and a nice grounding setup so no complaints. Was only $100 too.
8 gauge fosgate wiring for the power/ground and 12 gauge StreetWires speaker wire.
My RCAs were like $18 at BestBuy but the audio quality is great, no static at all so far. Made sure to keep the power wire far away from the RCAs. Running them from the preamp out on a JVC headunit.
Still though, wonder what it would sound like with a Focal amp, Focal 6x9's and a nice set of Monster Cable RCA's.
