![Spec advice? I'll try to keep it short: two skar evl18s before, now have four. Old box for 2 hits super hard, low. Divided, 5.21 cu ft per chamber, 6 by 6 Spec advice? I'll try to keep it short: two skar evl18s before, now have four. Old box for 2 hits super hard, low. Divided, 5.21 cu ft per chamber, 6 by 6](https://preview.redd.it/ro0tasi88gs91.jpg?width=640&crop=smart&auto=webp&s=70e8d0305bc32166cf4a866466d11392762c4b15)
Spec advice? I'll try to keep it short: two skar evl18s before, now have four. Old box for 2 hits super hard, low. Divided, 5.21 cu ft per chamber, 6 by 6
Audioholics Reviews their first DIY Subwoofer, the CSS SDX12 Sealed Kit! | Audioholics Home Theater Forums
![Should I port my subwoofer box? I've got 2 12s under the seat in my truck and with the windows down they hit like they should, with windows up they sound horrible, Should I port my subwoofer box? I've got 2 12s under the seat in my truck and with the windows down they hit like they should, with windows up they sound horrible,](https://preview.redd.it/should-i-port-my-subwoofer-box-ive-got-2-12s-under-the-seat-v0-76poft0lj2ca1.jpg?width=640&crop=smart&auto=webp&s=c4e6bf6c77afe7f8d63b2f809b59d34fe11a516a)