1 sub - VS - 2??
 

What differences will you see between 1 sub and 2?

The question is loaded..... but from a pure SQ standpoint a single sub is more desirable....

WHAT HE SAID↑

yeah i was just scared to answer this in anyway..... I have one and its far louder then my friend who has 2 12's but thats because of what we have for gear, the box, the vehicle, the way they are tuned..... okay im just going to stop now....

depends on how much power you have.

depends on the box ,amp/amps ,sub/subs and then you have the car there in
how much timw and work in the install

all other things being equal (which they never are)...2 subs of the same model will be louder than a single one of the same model.

Exaclty, what he said.
moreover depending on the subs, you will only gain a small # db's over a single sub.

sometimes thats not the case. its very power dependant.

I have been curious about this as I run stereo subs in my home setup and the improvement is substantial. I worry that a vehicle cabin will be too small to realize the same benefits. I will be experimenting with this in the near future as I have a setup that will allow a relatively quick switch.