![Dual 6.5 Inch Subwoofer Box 3, 4, 5, 6, -6.5 Hole L Ported 25hz, 30hz, 35hz, 40hz Tuning Vented Design Passive Speaker with Preinstalled Terminal, Wire & Corner Guard Setup Dual Speaker Dual 6.5 Inch Subwoofer Box 3, 4, 5, 6, -6.5 Hole L Ported 25hz, 30hz, 35hz, 40hz Tuning Vented Design Passive Speaker with Preinstalled Terminal, Wire & Corner Guard Setup Dual Speaker](https://img.lazcdn.com/g/p/5bf1a9bc7138722536462af72ce6927c.jpg_240x240q80.jpg_.webp)
Dual 6.5 Inch Subwoofer Box 3, 4, 5, 6, -6.5 Hole L Ported 25hz, 30hz, 35hz, 40hz Tuning Vented Design Passive Speaker with Preinstalled Terminal, Wire & Corner Guard Setup Dual Speaker
![Car Audio | DiyMobileAudio.com | Car Stereo Forum | Subwoofer box design, Diy subwoofer, Diy subwoofer box Car Audio | DiyMobileAudio.com | Car Stereo Forum | Subwoofer box design, Diy subwoofer, Diy subwoofer box](https://i.pinimg.com/474x/bf/2a/aa/bf2aaa46feb6ab44a5196cc609c981fb.jpg)
Car Audio | DiyMobileAudio.com | Car Stereo Forum | Subwoofer box design, Diy subwoofer, Diy subwoofer box
![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://i.redd.it/76poft0lj2ca1.jpg)
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,
![Amazon.com: Bbox Single 10 Inch Subwoofer Sealed Enclosure - Car Subwoofer Box & Enclosures - Premium Subwoofer Box Improves Audio Quality, Sound & Bass - Red & Black Spring Terminals - Charcoal : Electronics Amazon.com: Bbox Single 10 Inch Subwoofer Sealed Enclosure - Car Subwoofer Box & Enclosures - Premium Subwoofer Box Improves Audio Quality, Sound & Bass - Red & Black Spring Terminals - Charcoal : Electronics](https://m.media-amazon.com/images/I/815xJLcRD+L._AC_UF350,350_QL80_.jpg)
Amazon.com: Bbox Single 10 Inch Subwoofer Sealed Enclosure - Car Subwoofer Box & Enclosures - Premium Subwoofer Box Improves Audio Quality, Sound & Bass - Red & Black Spring Terminals - Charcoal : Electronics
![8 Inches Subwoofer BOX / Enclosure L Ported 20hz 25hz 30hz 35hz 40hz Tunin with Terminal Wire | Lazada PH 8 Inches Subwoofer BOX / Enclosure L Ported 20hz 25hz 30hz 35hz 40hz Tunin with Terminal Wire | Lazada PH](https://img.lazcdn.com/g/p/9b0558552d5bec5556819d0c20b50256.jpg_720x720q80.jpg)