Re: Factory Stereo, Sub, Amp Question
Parts Express has them cheaper: http://www.partsexpress.com/pe/showd...number=266-200
As for what to set the LPF on your sub amp, experiment around 100-150 Hz. Most subs won't sound good going higher, but you can try.
Also, cheap bass blockers only give a 6db per octave rolloff. The electronic crossover in the amp is 12db per octave (many amps have 18db or 24db rolloff as well). The fact that they have different slopes, means you can't just match the two frequencies, and expect it to sound seamless. You will need to experiment to find out what sounds best.
Thou hath not so much brain as ear wax.