Tru Spec Enclosures

At 12 Volt Outlet, we help Houston drivers sort through prefab subwoofer boxes and match an enclosure to the specific subwoofer and vehicle space. Tru Spec is GP Car Audio’s enclosure range, with empty, bare-wood boxes in ported and sealed designs. We look at the driver application, airspace and layout before choosing a box, because diameter alone does not confirm fit.

Tru Spec subwoofer enclosures

Choose from single- and multi-subwoofer enclosures for 6.5-, 8-, 10-, 12- and 15-inch applications. Ported models come in different enclosure sizes, tuning frequencies and layouts, including boxes with the subs facing up and the port facing back. Some listings name a specific Sundown or Kicker model. Use that model as the application guide rather than assuming another subwoofer of the same diameter will fit.

Tru Spec also has Elite enclosures for specific Sundown and Kicker Solo X L7X applications, plus a sealed single 10-inch Stack Fab enclosure. That Stack Fab listing gives 0.55 cubic feet of internal volume before subwoofer displacement and a maximum mounting depth of 5.50 inches. Construction, included parts and finish details vary by listing, so we use each enclosure’s stated details rather than assuming they are the same.

Match the box to your build

• Confirm the exact subwoofer model, mounting opening and mounting depth. Nominal speaker size alone is not enough to establish fit.
• Compare the listed airspace with the subwoofer’s recommended volume, accounting for driver displacement where applicable.
• Measure the vehicle opening and available space for the enclosure and port in the orientation you plan to use.
• Compare the listed tuning and layout with your build plans. Subwoofers are not included.

Start with the exact enclosure listing for dimensions and application details, then compare those requirements with your subwoofer and vehicle. We can help you narrow down the options using those details. See our Tru Spec brand overview, or browse speaker boxes and car subwoofers.