need a lot lot lot of input on huge system in a small civic

[Accord Man]

Originally posted by sc0rch
if you really wanted to you could spray on some ruberized undercoating all over your trunk...that'll stop alot of rattling....and if you wanted to face the subs twards the seat you could always cut out a piece of plywood or something to the shape of the back of the seat and attach it......then it would act as a deflector

the undercoating does work great..

but to reflect sound, not much works as well as hatch lid. And you want to deflect the sound from the back seat towards the back of the car? or am I missing something..?