I've got 2 10" subs in a sealed box in the trunk of an 85 tempo.When I pop the trunk open they pound way better.Just wondering how to get the same performance with the trunk closed

 

You'll need to move the position of the box. Try turning it around, sideways, backwards, upside down...until you get the best possible sound inside your ride, then mount it firmly to your car.

 

Your getting cancelation when the trunk is down. Moving your bax around can help. Can you post a pic of your trunk so I can get a better idea of what your working with.

 

Drill big holes in your trunk.

 

pop a big hole in the rear deck where the 6x9 are and fire the subs up that direction.... could help maybe not or just remove the rear 6x9 to see if the sound will travel better into the cabin.

 

yuppers

dont recommend the big hole in the trunk

dont recommend punching a big hole in the rear deck though removing rear speakers could/ might help without modifying sheet metal

 

Face the subs and port (if you have one) into the cabin, and seal around the edges of the box so nothing can flow back into the trunk. That will get rid of your cancellation, and if you do it right, your car should be just as loud with the trunk open as closed. Worked for me.

 

AAAAAAAAHAHAHAHAHHAHAAAAAAAA

 

remove the sub and send them to me LOL
remove the deck speakers and let the wave come into the car that way
but i like dukk way too "Drill big holes in your trunk."
someone had a pic of a car with 2 12 subs set so the sub fired down to under the car
do not do that

 

go vented...around 35...You may "fix" you actual box.....I wont recomend to make holes tho....