18"

Fi Car Audio - MT Series 18" Subwoofer

The 2022 MT Series of Fi subwoofers is designed to meet the needs of the serious competitor and and monster basshead. With a massive 4″ voicecoil for increase thermal capacity, we designed the rest of the motor via FEA to optimize the proprietary...

Fi Car Audio - XV4 Series 18" Subwoofer

The Xv4 Series of subwoofers is a super tough daily entry level sub. A double stack of wide high strength magnets and a standard high compression pole cap are the foundation for this motor. A multilayer foam wide surround is attached to a fiber...

Fi Car Audio - HC Series 18" Subwoofer

The HC Series signals a return to traditional ferrite motors. The HC Series is the latest in the progression of Fi subwoofers geared towards thundering daily drivers. Utilizing a favorite 3 stack ferrite magnet design using US steel cut on our water jet...

Fi Car Audio - NEO 3.5 18" Subwoofer

Build time 1-2 weeks ***For custom options (Carbon Fiber Cone Upgrade, Black Neo Upgrade, Powder Coated Parts, and Dust Cap Logo Colors) please email sales@skyhighcaraudio.com*** Comparable to the older Q series drivers. Great SQ...

Fi Car Audio - NEO 4.7 18" Subwoofer

Build time 1-2 weeks ***For custom options (Carbon Fiber Cone Upgrade, Black Neo Upgrade, Powder Coated Parts, and Dust Cap Logo Colors) please email sales@skyhighcaraudio.com*** New cooling and inductance features that are set up in...

Fi Car Audio - NEO 3.7 18" Subwoofer

Build time 1-2 weeks ***For custom options (Carbon Fiber Cone Upgrade, Black Neo Upgrade, Powder Coated Parts, and Dust Cap Logo Colors) please email sales@skyhighcaraudio.com*** Comparable to older BTL series drivers. Great tough daily...

Fi Car Audio - NEO 4.11 18" Subwoofer

Build time 1-2 weeksThe midpoint between the Delta and Omega lines: Comes with standard 4″ 4 layer and 4 spiders with the options for the Plus 4″ coils, extra spider, and gap option. Designed for modern monster applications in ported, 4th or 6th order...

Fi Car Audio - NEO 4.9 18" Subwoofer

Build time 1-2 weeks ***For custom options (Carbon Fiber Cone Upgrade, Black Neo Upgrade, Powder Coated Parts, and Dust Cap Logo Colors) please email sales@skyhighcaraudio.com*** Comparable to SP4+ or Team series drivers depending on...

Fi Car Audio - NEO 3.9 18" Subwoofer

Build time 1-2 weeks ***For custom options (Carbon Fiber Cone Upgrade, Black Neo Upgrade, Powder Coated Parts, and Dust Cap Logo Colors) please email sales@skyhighcaraudio.com*** Comparable to the Team3 series. High motor force and...