Slot Port w/ Floor Notch - NSWUS

Ported forward fire designs allow for extra output from your subwoofers with the limited space in an underseat location! This design features a notch that allows for clearance over a floor notch which is commonly needed for truck underseat subwoofer boxes. Build your own custom subwoofer box by using this blueprint design as a guide. 


NOTE: This design can only be used with 6.5" or 8" subwoofers. 


You are purchasing a digital document sent via email. NO materials are included or shipped



  • Digital blueprint design sent via email with all dimensions for each piece of the box
  • Assembly views detailing box construction
  • Artistic rendering with box information
  • Predicted response details
  • Links to instructional videos and recommended materials


Once I receive your order I will contact you to discuss design details, I look forward to helping you with your project! - Mark

Slot Port w/ Floor Notch - NSWUS

  • What is a blueprint design?

    • A blueprint design is a digital drawing that I create for you that allows you to easily build your own custom subwoofer box. I use your subwoofer specs and your dimensions to 3D model your exact subwoofer box, and I run through all the calculations needed to tune the box for your musical preferences. The blueprint design drawing has all the dimensions you need to make the box, along with assembly views. This makes it easy to build your very own custom subwoofer box that is designed exactly for your subwoofer(s) and your vehicle.

    How big is the box?

    • These box designs are custom. What this means is after you place an order I email you a simple list of the information and rough measurements I need. Since you will be providing the measurements the box I design will fit within your measurements and fit your vehicle. If it won't quite work I will work with you to determine a solution that will.


    Do you use the subwoofers specs for designing the box?

    • Of course! The whole point of building a custom box is to optimize the performance of YOUR exact subwoofers.