do you really need a divider inside the subbox i have a dual 12" subbox with no divider in it does it matter can u really tell the difference between one with one and one without?
It's not really a matter of sound difference. It's more of a safety reason. If one driver were to suddenly fail, the other driver would be running in twice the box size, and could go into over-excursion. Dividers can also help brace the box. With the divider though, if one sub fails, the other one is still playing in the correct volume.