4,500W RMS
The highest-power Ruthless subwoofer platform currently in the lineup.
Ruthless Audio
FLAGSHIP NEO 4″ VC SUBWOOFER
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The Ruthless Audio Neo 4" VC Subwoofer is built for one thing: domination. Engineered for competitors and hardcore bass enthusiasts, this beast delivers a relentless 4,500 watts RMS of pure power handling. When you unleash it, you’re not just hearing bass—you’re feeling destruction. Every hit is deep, tight, and brutally accurate, built to crush SPL lanes and street setups alike.
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Power means nothing without control, and this sub delivers both. The massive 4-inch voice coil and 5-layer progressive spider suspension keep the motor movement perfectly centered, even under insane power loads. Its open-column Neo motor design reduces weight while maximizing magnetic strength, translating every watt into extreme output with lightning-fast response.
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To keep performance ruthless under pressure, the Neo 4" is loaded with intelligent cooling and efficiency features. The pole sleeve and aluminum dome compression cap pull heat away from the coil, lower inductance, and maintain consistent output during extended demos or competition runs. The result is clean, powerful bass that never fades, no matter how hard you push it.
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If you’re building for maximum SPL, competition-grade performance, or just want the most aggressive subwoofer on the street, the Ruthless Audio Neo 4" VC is your weapon of choice. Built to run loud, hit harder, and stay cool, this is the sub that defines the word Ruthless.
Available in 15" or 18"Â
4” coil offer a selection of d.7 or d1.7
4500 RMS
5 layer progressive soft pack
Push terminalsÂ
Extra heavy aluminum basket
Wrap around gasket
Kraft pulp fiber reinforced cone
Dual layer wide foam surround
Standard heavy duty stitched hybrid lead or push/hybrid termination
144 tinsel count leads
FEA optimized motor design
Ultra Flux density design
4” diameter 4 layer coil
Open column motor design for increased cooling
T/S parameters coming soonÂ

THE FLAGSHIP RUTHLESS SUBWOOFER.
The Ruthless Neo 4″ VC is the full-send platform. Its four-inch four-layer coil, open-column Neo motor and five-layer progressive soft pack are built around high power handling, cooling and control for serious demo and competition systems.
Both 15-inch and 18-inch versions are available in dual 0.7-ohm and dual 1.7-ohm configurations, so the final choice should be made around the amplifier load, enclosure and electrical system—not just the size of the woofer.
WHY THIS SUB?
The highest-power Ruthless subwoofer platform currently in the lineup.
A massive coil platform designed to handle sustained high-power use.
Open-column motor architecture, pole sleeve and aluminum compression cap focus on thermal control.
Progressive suspension built to keep the moving assembly controlled under heavy load.
VERIFIED PRODUCT DATA
THE ENCLOSURE IS PART OF THE SYSTEM.
Ruthless has not yet published the T/S parameters for these woofers, so we are not going to post generic enclosure numbers and pretend they are engineered for this driver. Final box design should account for the exact woofer, desired bandwidth, available space, power and vehicle.
If you are building before the full parameters are released, contact Ruthless before cutting wood.
ASK RUTHLESS →BUILD THE WHOLE SYSTEM.
A subwoofer at this level only performs as well as the amplifier, charging system, wiring, enclosure and setup around it.
MEASURED DRIVER DATA • D2 COILS
All parameters below are measured data from the supplied Ruthless driver sheets and are for the D2 coil versions. Use the table that matches the exact 15″ or 18″ woofer being modeled.