new box

[Skrilla]

What sub?

[vw passat]

its a 15'' spl dynamics spl-380d2 and amp spl dynamics d5 i think the 2nd design is better i don't know

[Skrilla]

The first one is lacking port area per foot. the recommended Enclosure size for that sub is 4ft^3 net. If you can make the box bigger, try to get around 4ft^3 net, and shoot for around 62" of port area.

[vw passat]

tx skrilla and what about the port area per foot? tx alot mate

[Skrilla]

I'd say 14"-15"

[vw passat]

so i need to go bigger port to make 14-15in^2 and 62.00in^2? tx again mate

[Skrilla]

Yes. I see that you're using an aero port, so that's going to limit you on the exact port area, but you can probably get away with using a little less port area with aero ports. Have you considered an L-ported box?

[vw passat]

i was making this box with aero port so i can cut the tube to find the best score thats why. do u have another suggestion skrilla? tx bro

[Skrilla]

i was making this box with aero port so i can cut the tube to find the best score thats why. do u have another suggestion skrilla? tx bro

In that case I'd go with a single 8", or two 6" aero port(s). It will be a little less than recommended port area, but it will be fine as long as it's a true flared aero port(s).

[vw passat]

with a single 8" the port area is going to be 50.24in^2. so i make 2 6''? tx again bro