Windows down = less bass?

[Mr.BassMan]

for some reason when i roll the windows down in my car, the bass isn't very loud.. the subs are 15" l7s and a zx2500.1, box is 9^3 side port tuned @31hz, subs on the top.. i was thinking either the tuning is too low, and the subs lose output when windows are down, or just the side port is making it sound not as loud.. the higher notes 45hz+ sound pretty much the same, but anything louder i lose ALOT of sound with the windows down.. any advice?

[will77530]

whats your car peak at?

[Amart88]

Every vehicle is different. All of the sound is not sealed inside when the windows are down so it could seem less loud but it is probably louder outside when they are down.

[Guest]

acoustics are a bitch.

[Ddub847]

did u test it on a meter?

[Mr.BassMan]

Idk what it peaks at, i've never metered it.. but yeah it does get loud outside the car. but inside it isn't very loud at all.. :\

[Mr.BassMan]

I mean its cool when its loud outside and everyone hears your shit banging, but id like to be able to hear it all too.

[BassHead810]

What vehicle is it? Do you have a sunroof? Every setup is different. My lows are loudest at my ear with the sunroof open and only passenger window down. But at 45hz and above it doesnt make much difference

[Mr.BassMan]

oldsmobile bravada, its like a chevy blazer but oldsmobile makes it.

[teardrop]

my blazer seems to be louder with the windows up and the sunroof fully opened