Custom Dual 18-Inch Flat-Pack Subwoofer Enclosure

Custom Dual 18-Inch Flat-Pack Subwoofer Enclosure

Get a custom subwoofer enclosure designed around your vehicle, two 18-inch subwoofers, available space, and tuning goal. Each enclosure is designed and cut for your build, then shipped as a flat-pack kit for assembly. This gives you a better fit and more useful performance than a generic prefabricated box.

What's Included

• Custom enclosure design for two 18-inch subwoofers
• Pre-cut flat-pack enclosure panels
• Box terminals

Information You Provide

• Subwoofer brand and model
• Total RMS wattage going to the subwoofers
• Vehicle year, make, and model
• Maximum available width, height, and depth
• Preferred subwoofer and port orientation
• Desired enclosure airspace and tuning
• Desired finish

Assembly and Build Planning

This is a flat-pack kit of cut panels that you assemble, rather than a finished box ready to install. Confirm the assembly instructions, required supplies and panel material with CAS before ordering. Subwoofers are not included in the list of supplied components above.

Custom Dimensions, Tuning and Port Orientation

Send the usable space in your vehicle along with your preferred subwoofer and port direction, desired airspace and tuning. Those goals must be reviewed together; not every combination will work within a given space. Provide the exact subwoofer model and its published displacement so the design can account for the space occupied by the drivers and port. Confirm the final design with CAS before cutting begins.

This kit is intended for a custom car audio build using two 18-inch subwoofers. Compare 18-inch subwoofers and amplifiers, then estimate electrical demand with the amp draw calculator.

Production and Shipping

Custom design and cutting may take up to 14 days. After production, shipping may take up to an additional 10 days depending on the destination and carrier.