1LoudLS
Dedicated LVC Member
Depending on the power of the head unit and the minimum required by both sets of speakers, you might still need an amp.
It is also correct that the factory head unit sends only the bass frequencies to the deck mounted subs.
i was refering to the OP who wanted to put 6x9's in because he does not have the subs, and i said that i would RERUN the speaker wire from the rear doors (which are in a bad location) to the newly mounted rear speakers in the rear deck. you would then leave the rear door speakers unhooked so that only one set of speakers where hooked up