Hello all,
I have two JL 10W3v2-D4 subs and I am using a Fosgate 501BD amp gonna put them into a sealed 42"x19"x9" box. I was wondering if I needed to put a partition in the box between the two subs? One channel amp same subs sealed box how does a partition help? Thanks

car: 94 ford crown vic
subs facing rear
box:
42 inches wide/ 19 inches tall/ 9 inches deep
1 1/4" plywood

 

A partition helps to reinforce the box. In individual chambers, if a sub is not working, it won't just become a passive radiator for the sub that continues to work, soaking up energy from the functioning sub.