The response is dictated by the combination of the sub specs, cabinet volume and the car being used.

Just install the sub on a solid surface and seal the trunk the best you can. Use spray foam to seal the hepard to reach places.

I should have pics of some installs I've done.

 

it would greatly help to see some instal pictures as im still unclear as to just how im supposed to brace the baffle and what to in my vehicle. i realize it must seperate fully cabin and trunk and be attached to the floor, rear deck lid and sidewalls of the trunk but should the deck lid be fully deadened to seal it off?
do i use regular silicone as a sealer around the baffle? im not going to use the foams to seal holes because i hear its insane to try to get off unless i absolutely have to

 

Post a photo of your trunk if you can.

You can reduce the amount of work you need to do by making the baffle a nice tight fit.

Deadening will help, but spray foam is your friend.

 

heres a few i found online

 

Are you going t judges training? It would be easy to show you whats needed to be done.

 

I cant wait to get the IB setup going on my car to this summer, I am new to this as well however and this thread will be helpful to me! BTW John this should help you, its a link to Scott Buwalda's Altima and he is running a 3 sub IB setup on that vehicle: http://www.b-quiet.com/altima.html