Trinity H Series 18" Subwoofer 3,500 Watts RMS

The Trinity H Series 18" Subwoofer 3,500 Watts RMS is a high-power, 18-inch driver built for discerning bass enthusiasts who demand extreme output and reliable performance in demanding installs.

• Power handling: 3,500 Watts RMS provides the continuous, high‑power capability needed for loud, controlled bass in large enclosures and demanding tracks.
• Quad-stacked ferrite motor: with over 33% more ferrite than M series counterparts, delivering stronger magnetic control and better heat management at high excursion.
• FEA-optimized structure and airflow: Finite Element Analysis informs the design to improve structural integrity and heat dissipation within both the motor and basket for reliable performance under demanding conditions.
• Triple-layer foam high-excursion surround: durable and flexible for extended bass response and consistent cone control during heavy playback.
• Rigid composite paper cone with carbon fiber dustcap: increases rigidity to reduce distortion and preserve precise bass reproduction.
• 10" quad-layer progressive spider pack: stable voice-coil centering and controlled excursion, especially under high-power, high‑duty-cycle use.
• 4" BASV high-temperature dual voice coil: allows higher winding height (over 40% more than M series), supporting elevated power handling and heat dissipation in demanding builds.
• Enclosure compatibility: suitable for ported or bandpass enclosures, offering design flexibility for maximizing low‑end extension in a vehicle.
• Physical dimensions: Outer Diameter 18.45 in; Cutout Diameter 16.77 in; Mounting Depth 12 in—clear fitment guidance for large‑cabins designs and custom enclosures.
• Testing and warranty: extensive QC and testing, recone options, and a 1-year manufacturer warranty provide long-term reliability and serviceability.

In a real car audio build, the H18 delivers deep, powerful bass with controlled cone motion in ported or bandpass setups, while the quad-stacked motor and high‑temperature coil sustain performance under high power. The combination of a rigid cone, high‑exursion surround, and robust spider pack supports demanding demos and daily listening alike, with recone options and warranty backing long-term value.