Ruthless Audio Ferrite 3" VC 18" D0.7 Subwoofer | 2500W RMS

Ruthless Audio Ferrite 18" D0.7 Subwoofer | 2500W RMS | 3" Voice Coil | Quad-Stack Magnet | US Steel Motor

The Ruthless Audio Ferrite 18" D0.7 Subwoofer is built for those who crave deep, dominating bass with no compromises. Pushing 2500W RMS through a rugged, precision-engineered platform, this subwoofer blends brute motor force with refined engineering—making it ideal for both daily drivers and SPL competitors.

Quad-Stack Ferrite Power with Precision Machining

At the heart of this subwoofer is a 4-stack ferrite magnet structure crafted from US steel, water-jetted and CNC-machined in-house for unmatched quality and consistency. This high-flux motor is optimized using FEA technology, delivering clean, powerful output across a wide frequency range.

Advanced Cooling for Peak Performance

To keep thermal temperatures in check, this sub uses a solid pole design paired with staged aluminum cooling. Whether you’re pounding on the lanes or cruising the streets, the heat stays under control—ensuring long-lasting performance at high output.

Seamless Power Transfer with Zero Loss

Featuring a specialized 144 tinsel count leadwire, double-sewn into a five-spider suspension, this sub guarantees maximum power delivery to the 3” 4-layer high-temp coil—without failure or performance loss.

Ruthless Audio 18" Ferrite Subwoofer Features:

• Available in 18” size

• Dual 0.7Ω voice coil options

• 2500W RMS / 5000W Peak Power Handling

• Quad-stack ferrite magnet for high motor force

• 3” diameter, 4-layer flatwound voice coil

• FEA-optimized high-flux motor design

• Extra heavy-duty aluminum basket with wrap-around gasket

• Kraft pulp fiber-reinforced cone for strength and accuracy

• 144-count double-sewn stitched hybrid or push lead terminals

• Dual-layer wide foam surround for clean excursion

• Standard carbon fiber dust cap for added rigidity and aesthetics

Built for Brutality. Engineered for Precision.

Whether you’re building an SPL monster or a brutal daily driver, the Ruthless Audio Ferrite 18" D0.7 Subwoofer delivers relentless output, thermal stability, and premium build quality backed by US craftsmanship. From its quad-stack motor to its stitched 144-lead suspension, this subwoofer is engineered to perform—and built to last.