This is kinda dumb, but i was just wondering since my HU does not have a preamp output for subwoofers, does that mean i cant have subs on my car? Could i just plug my subs into the output for my back speakers, (im not going to have an amp for my speakers)or does it have to be in the sub output?
well yeah you can hook up the subs but what's the use of subs without an amp. You may as well get you a nice set of 6 x 9's. Or if you are going to have an amp for the subs you can hook it into the RCA outputs.
Yea you can have subs in your car. You will just use one of the rca outputs but you will not have control over your subs from your headunit. The point for the subwoofer output is to be able to adjust bass and crossover points from the headunit.