What difference will it make in a subs performance if the box volume is out of the recomended range? Also if a Sub has a recomended range of .7-1.3, What difference would you notice if it is in a box at the upper or lower limits of the range? Would the sub perform different if it was in a .75cuft. vs. a 1.25cuft. box even though both volumes are within the recomended range?

 

generally for sealed boxes: (someone correct me if i am wrong)
smaller box: takes more power to get loud, and cant play the lows as well.

larger box: will play lower, and will be louder on less power, BUT be careful not to bottom out the woofer by giving it too much power on a box larger than it's recommended size.

Recommended sizes are the size range you want to aim for to get the best performance out of your woofer.

 

Louder - Not necessarily.

 

I built an enclosure after researching it and it turned out great.Get this.I put 1 12" sub under the small back seat in a super crew!I covered it in fake leather.I am tempted to build them and sell them!

 

I agree , a smaller box will not hit the lows like a larger box will . But the driver's output in the higher frequencies shouldn't be affected .