
Fi Car Audio is an American manufacturer based in Las Vegas, Nevada, founded by Scott Atwell (also the creator of RE Audio). Each subwoofer is custom-built in-house using CNC-machined US steel components with 10-14 day build times—no mass production. Their BTL (Blow Through Loud) series dominates daily driver and SPL competition alike, while the Neo series offers refined sound quality with extreme power handling. In August 2024, Fi transitioned to new ownership including leaders from Sky High Car Audio, Limitless Lithium, and SoundQubed, with Scott Atwell remaining as lead designer. Fi subwoofers are built by competitors, for competitors.

The Fi Car Audio BTL3 12" 1 Ohm Subwoofer is a high-performance subwoofer. Designed for deep bass reproduction and high SPL output.

The Fi Car Audio Alpha Series 10 Subwoofer is a high-performance subwoofer. Designed for deep bass reproduction and high SPL output.

The Fi Car Audio Alpha Series 12 Subwoofer is a high-performance subwoofer. Designed for deep bass reproduction and high SPL output.

Fi Car Audio subwoofer designed for extreme SPL competition and high-output applications. Hand-built in the USA with premium components and heavy-duty motor structures. Engineered for maximum power handling and deep bass reproduction.

The Fi Car Audio Audio - Bl? - V1 Or V2? 12" Subwoofer is a high-performance subwoofer. Designed for deep bass reproduction and high SPL output.

The Fi Car Audio HC Series 12" Subwoofer is a high-performance subwoofer. Designed for deep bass reproduction and high SPL output.

Fi Car Audio subwoofer designed for extreme SPL competition and high-output applications. Hand-built in the USA with premium components and heavy-duty motor structures. Engineered for maximum power handling and deep bass reproduction.

The Fi Car Audio HC Series 18" Subwoofer is a high-performance subwoofer. Designed for deep bass reproduction and high SPL output.

Fi Car Audio subwoofer designed for extreme SPL competition and high-output applications. Hand-built in the USA with premium components and heavy-duty motor structures. Engineered for maximum power handling and deep bass reproduction.

The Fi Car Audio MT Series 18" Subwoofer is a high-performance subwoofer. Designed for deep bass reproduction and high SPL output.

The Fi Car Audio NEO 3.5 15" Subwoofer is a high-performance subwoofer. Designed for deep bass reproduction and high SPL output.

The Fi Car Audio Neo 3.5 Series 12" Subwoofer is a high-performance subwoofer. Designed for deep bass reproduction and high SPL output.

The Fi Car Audio NEO 3.7 18" Subwoofer is a high-performance subwoofer. Designed for deep bass reproduction and high SPL output.

The Fi Car Audio NEO 3.9 15" Subwoofer is a high-performance subwoofer. Designed for deep bass reproduction and high SPL output.

The Fi Car Audio NEO 3.9 18" Subwoofer is a high-performance subwoofer. Designed for deep bass reproduction and high SPL output.

The Fi Car Audio NEO 4.11 12" Subwoofer is a high-performance subwoofer. Designed for deep bass reproduction and high SPL output.

The Fi Car Audio NEO 4.11 15" Subwoofer is a high-performance subwoofer. Designed for deep bass reproduction and high SPL output.

The Fi Car Audio NEO 4.11 18" Subwoofer is a high-performance subwoofer. Designed for deep bass reproduction and high SPL output.

The Fi Car Audio NEO 4.9 12" Subwoofer is a high-performance subwoofer. Designed for deep bass reproduction and high SPL output.

The Fi Car Audio NEO 4.9 18" Subwoofer is a high-performance subwoofer. Designed for deep bass reproduction and high SPL output.

Fi Car Audio subwoofer designed for extreme SPL competition and high-output applications. Hand-built in the USA with premium components and heavy-duty motor structures. Engineered for maximum power handling and deep bass reproduction.

Fi Car Audio subwoofer designed for extreme SPL competition and high-output applications. Hand-built in the USA with premium components and heavy-duty motor structures. Engineered for maximum power handling and deep bass reproduction.

Fi Car Audio subwoofer designed for extreme SPL competition and high-output applications. Hand-built in the USA with premium components and heavy-duty motor structures. Engineered for maximum power handling and deep bass reproduction.

Fi Car Audio subwoofer designed for extreme SPL competition and high-output applications. Hand-built in the USA with premium components and heavy-duty motor structures. Engineered for maximum power handling and deep bass reproduction.

The Fi Car Audio Xv4 Series 10" Subwoofer is a high-performance subwoofer. Designed for deep bass reproduction and high SPL output.

The Fi Car Audio XV4 Series 12" Subwoofer is a high-performance subwoofer. Designed for deep bass reproduction and high SPL output.

The Fi Car Audio XV4 Series 15" Subwoofer is a high-performance subwoofer. Designed for deep bass reproduction and high SPL output.

The Fi Car Audio XV4 Series 18" Subwoofer is a high-performance subwoofer. Designed for deep bass reproduction and high SPL output.