4 12s in a cobalt

[lotus]

I don't want to wall. I like seeing my rear window but I need the trunk for batts and amps. Was thinking of 4 12s facing up and port forward (2 common walls) so down the middle. I have plenty of space but I want to get it right the first time since I'm building in the car. My power is a crescendo BC3500D at .5 (will be 2 3500s strapped eventually) and its on 4 american bass xfl 12s. Thinking about 31-33hz tuning since I wanna be able to hair trick but still get loud. Anyone have any box ideas? Max dimensions are 40wide by 28high by 28long.

[Neckbeard]

How many cubes are trying to run?

[Guest]

sub up port back doesn't work too well in trunk cars usually.

if you want loud and you want to see out of your rear window, do 2 12's firing forward sealed off.

[CarAudioFab]

sub up port back doesn't work too well in trunk cars usually.

if you want loud and you want to see out of your rear window, do 2 12's firing forward sealed off.

I agree with this methodology, I have always liked trunk car systems with this design.

[OBI]

I think he wants to use the trunk for batts and amps, and have a big box in the back seat. If you do this you have to make sure you isolate your trunk and cabin for best performance. I honestly would try 4 12's firing foward and port firing up.

[lotus]

I have 2 xfls on the 3500 firing forward now... not satisfied. Want more cone area and space for batts and amps. But without a full wall. 4 12s fit fine in about 7-8cu net

[Guest]

I have 2 xfls on the 3500 firing forward now... not satisfied. Want more cone area and space for batts and amps. But without a full wall. 4 12s fit fine in about 7-8cu net

you sure you had EVERY crevice filled with foam? even a single hole can drastically decrease performance

[lotus]

Not all but 95% for sure. Its loud but I want more air movement. And 4 12s will get louder, plus its gonna be at .5 rather than 1ohm I got now