Best way to wire up my Audio setup and Setting LPF and HPF
 

New setup. (trying for better sound quality not loudness)



(headunit) Alpine Headunit (50x4) (2 Preout) (Front & Rear)





(Subwoofer & Amp) 800Watt RMS AMP Driving 2x 12" @ 2Ohms pioneers sub-woofers.



I have x6 5.25"



Speakers Specs



13cm (5.25") 2 way speaker

Peak power: 105 W

RMS power: 35W

Sensitivity: 93 dB (2.83V/1m)

Frequency response: 70 ~ 20 kHz

Mounting depth: 53 mm

Voice coil: 4Ω

Proprietary Plus One« cones

Vented woofer motor structure

Titanium-laminate tweeter

Improved I-Mount™ (patent no. 5,859,917) tweeter-mounting system

Sold in pairs and supplied with grills



i have a 4 Channel Amp.



Specs.



RMS Power Output (Watts x Channels) 75 x 4

Peak Power Output (Watts x Channels) 150 x 4

Power at 2 Ohms (Watts x Channels) 100 x 4

Bridged Power (Watts x Channels) 200 x 2



In case your wondering i fitted the other pair of 5.25 in rear door cards, I may also cover the rear quarter of the door in the acoustic carpet because when i test fitted some it looked really nice half black. It was a bit of pain because i needed the height because of power window bars :)



http://i39.tinypic.com/72y6o1.jpg



http://i42.tinypic.com/2i9gzex.jpg

I was thinking of Running Front RCA to Control the Fronts only. Then Use RCA splitters to Control the Rear doors and OEM rears Amp & Sub woofer amp.



Because im using 2 Amps. It would be best to tune the mids first using the built in Crossovers & Head unit Balance i want between the speakers. Then use the Amp Sub woofer gain to match ?