Experience the true power of bass with the Ultimax II 18” subwoofer kit. This kit makes it effortless to create a low-distortion subwoofer that delivers breathtaking output and incredible low-frequency extension. Constructed with rugged 3/4” MDF, the innovative knock-down enclosure features an interlocking bracing system and a robust 2-layer 1-1/2” baffle, ensuring durability and performance. Whether you’re designing a grand home theater or a high-output music setup, this kit is your ultimate solution for achieving the true bass experience you desire. Elevate your audio game—choose Ultimax II 18” subwoofer kit.