Cost, quality, warranty, sound
can't hit extreme lows.
I am very impressed with this sub & handling the majority of bass that gets thrown at it. It sounds decent when it's under powered & can hang very well when it has the right amount of power. The recommended box size for this is .88 cu. ft. My only issue is that this sub & box can't handle the real deep bass. Instead you can hear the sub try to hit, but it either baffles or sounds way distorted. I recommend purchasing the sub & building your own box of 1.2 Cu ft.