American Bass HD Series 18" Subwoofer

The American Bass HD Series 18" Subwoofer is a heavy‑duty, high‑output driver designed for car‑audio enthusiasts who demand serious bass and flexible amplifier matching.

• RMS Power: 2000W — represents continuous power handling, enabling sustained bass output when paired with an appropriate amplifier.
• Max Power: 4000W — indicates peak power capability for brief dynamic bass peaks without distortion when demanded by the music.
• Impedance (Ohms): D1 / D2 — dual‑voice‑coil design allowing multiple wiring configurations to match different amplifiers.
• Sensitivity: 89 dB — reflects efficiency; higher sensitivity means more output for a given input power, aiding system design.
• Mounting Depth: 16.85 in — installation depth requirement to clear in how deep the woofer sits in the mounting location.
• Cutout Size: 11.4 in — diameter of the opening required in the enclosure or mounting surface for proper fit.
• Ported Box (ft3): 5.5 - 6.5 — recommended enclosure volume for a ported configuration, influencing low‑frequency extension and efficiency.
• Magnet Size: 350 oz — magnet mass contributing to control of cone motion and handling of high excursion demands.
• Voice Coil Size: 3 — diameter of the voice coil, affecting heat handling and excursion capability under heavy drive.
• Basket Type: Cast — rigid frame construction supporting durability and stable operation at high excursion.
• Recommended Amp (Pair): VFL 4K — pairing guidance to achieve sufficient headroom and clean power delivery in a high‑output setup.

In a performance‑driven build, this sub benefits from a ported enclosure in the 5.5–6.5 ft3 range, robust 350 oz magnetism, and a dual impedance design that lets you tailor amplifier loading. The cast basket and 16.85 in mounting depth demand careful enclosure and vehicle fit, but deliver reliable, high‑power bass when paired with the recommended VFL 4K amplifier.