I wish someone would tell me how to just Build one outta scratch and use it in my car. Sounds like it could be complicated though.
Headunit: Eclipse CD4000
Sub: RE SX 10" in a Folded Horn enclosure
Batt: Kinetik HC1400
speakers: Factory (it's all about the headunit)
Sub Amp: MA Audio HK401SX
Highs/Mids amp: Factory
take note that there's a difference in constuction of a passive and active eq. a passive eq is rather easy to build, however it will be fixed design unless you modify the schematics. while it's definitely possible to Build your own active x-over, the difficulty is much higher. however, you will still be limited to number adjustments of a diy active x-over over one found in a hu/external unit.
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