by parallel you mean wire from one channel to the 6x9, from the 6x9 to the 4", and from the 4" to the amp right?
No.
That is series.
Parallel is just like it sounds. The wires run parallel to each other. Run it all directly to the amp. if you can't fit them all in the amp, splice one into another and tape it off or so, or run both into a bigger wire.