Hey all, just looking for a bit of advice really as I'm not very knowledgable in this area... I've taken my rear passenger seats out and crafted a flat piece of plywood to fit over the gap. I've bought 2 x 10" Subs and will install these facing up through the wood. I'll obviously carpet over the wood before bolting the subs down. My main question is how can I make the subs louder / more bassy. I was thinking that if I put down enough wadding underneath the plywood panel, then this would absorb the reverse-phase bass created behind the subs to stop it from cancelling out my main bass from the front of the subs. Would doing this be sufficent to make my subs louder or will I definitely have to build proper enclosures behind the subs? Thanks in advance. -Andy.