by Chinky420 » Sun Oct 28, 2007 12:54 pm
i dont think so....if you're having to ask. there is a factory jbl amp built in, and if you don't remember bypassing the factory amp, and then plugging the tweeters and cabin speakers into the aftermarket amp, then probably not. conventionally, when installing a sub system, the amp used will only be powered to run the subs (check out where your sub amp is mounted. if the line out goes to the subs ONLY, then the answer is no)
the amplifier only works in one direction, as in, it will only power that which is downstream of it. so just hooking the amp up to your headunit will not allow it to power the speakers which split off before the amp comes into the picture.
think of it this way....the head unit splits and original signal goes to both the factory and the sub amp. both amps will amplify the signal to the speakers that are behind/after it.....so the factory amp will power the cabin speakers, and the sub amp powers the sub.
hope that helps