the problem im having is when im tuning my sub with the trunk open the bass sounds great in the car but when i close the trunk it losses almost half its sound production. by the way i mean inside the car in the front seat.

ok so my system consists of one of my 2 cerwin vega vega subwoofers they are older with the orange v rubber. i just bought a vega stroker 1000.1 amp and it powers it with no problem.

both the subs have been tested and they both do the same thing i am just wondering why i loose so much sound in car when i close the trunk. im hoping the subs are not blown.

any ideas