jester73440 10+ year member
Senior VIP Member
A friend of mine finally got tired of his heavy bandpass box with an audiobahn and put in an IDMAX 15" in a sealed box 1.32cuft. Well we figured it would sound better, but would lose some SPL. But it has lost close to half the loudness. He had a bigger amp that matches the subs specs more so he threw that on it (800w rms) and its still no where near the audiobahn(@ 600w rms).He notice with the trunk open he had a decent gain in volume, so he removed the trunk gasket and it got a little better. Any advice on this? The car is a 99 crown vic