Sky High Car Audio FMX Series 18" Subwoofer 2010-2011 Sturdy 4x4 aluminum throat for

Sturdy 4x4 aluminum throat for easy mounting and aesthetic symmetrical look

Phase Control 0/180

they're built to handle the heat of your fiercest tracks

The system is also pre-wired for 4-channel amplifiers

Sky High Car Audio FMX Series 18" Subwoofer 2010-2011 Sturdy 4x4 aluminum throat forSky High Car Audio FMX Series Subwoofers Available in 6. 5 18 (excludes 10) D1 D2 Ohm Options FMX: Forged to Perform. Built to Endure. The FMX Series from Sky High Car Audio is the next evolution of our commitment to high output, thermally superior yet efficient subwoofers for serious bass enthusiasts. With decades of experience, competitive insight, and our long standing pursuit of big bass, the FMX Series builds upon our legacy by pushing limits.