I was wondering if anyone might know how to set the unit, so that the bass in my stock speakers is completely off but not the one in my subwoofer.

go into you equalizer selection screen and select one of the custom eq's and push "customize". then adjust everything how you want it with the low end all the way down if thats what you want. then go to the a/v sound settings screen and adjust the subwoofer level and frequency.

its all in the opperators manual if that doesnt make any sense.

Don't use the parametric EQ for this. If your speakers are running on deck power go to A/V settings, and set the low-pass filter to it's highest setting. That will filter out low frequencies that are going to your speakers, but will not effect the sub preouts.

If you're using an amp for your speakers, set the low-pass filter using the amps onboard crossover network.

thanks a lot imma go try it right now