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If you run a pair of subs off of a mono block amp do you still need a box divider to give each sub it's own air space or can you just run one big box?

 
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well i'm going to do that simply to strenghten the box. and it probably would be a good idea to do it also to give each sub its own volume. i think if it was wide open it would perform the same as a ported box.

 
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It really depends on the type subs you use... and what they require for air space...

 
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if its a sealed box i would say do it... my box is sealed and i dont have a divider and i kinda wish i did because there is only so much air that can get in there so when 1 sub moves out it sucks the other one in.. i think it kinda restricts the bass but then again i dont know that much about subs.

 
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Subs should not be in out of phase from each other in a sealed box.

 
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unless he has a 2 channel amp thats not bridged and hes running each on its own channel.

 
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teh amp has nothing to do with a box divider, a divider means you'll need a little bigger box (subs need less space when you add multiples) I usually add a stiffing brace if it's a big box and anything less than 3/4 mdf