Every Tru Spec enclosure is computer designed, CNC cut, and assembled inhouse at GPcarAudio.

Tru Spec Prefabricated enclosures are simple, straight to the point, true to spec sub enclosures with proper airspace and non restrictive port area that allows you to have custom box performance at a reasonable price.

TRU SPEC PREFAB 4x 6.5″ Sub up port back with double flush baffle

Material: 0.75″ MDF

Total woofer displacements factored in: 0.24 cuft ) *What does this mean? You will have 2.5 cubic feet of internal volume AFTER your sub displacements. (Many 6″ are around 0.06 cuft each)

Total Airspace per subwoofer: 0.625 cuft