Fusion Signature Series 3i 10" Grey Sports Marine Subwoofer

The Fusion Signature Series 3i 10" Marine Subwoofer (010-02774-21) delivers powerful 600-watt peak (300W RMS) low-frequency performance in a True-Marine™ rated design built for boats, wake towers, pontoons, and offshore installations.

Featuring IP65 water and dust resistance, a durable polypropylene cone with rubber surround, 4-ohm impedance, and optimized marine tuning, this 10-inch subwoofer is engineered to produce deep, high-fidelity bass while withstanding salt, spray, UV exposure, and vibration.

Designed for seamless integration with Fusion marine stereos, amplifiers, and Fusion-Link™ systems, the Signature 3i subwoofer is the ideal upgrade for high-output marine audio systems.

High-Performance 600W Marine Bass

• 600 watts peak power for dynamic low-frequency impact
• 300 watts RMS continuous power handling
• Marine-tuned acoustic design optimized for boats and open-air environments
• Frequency response from 30 Hz to 2 kHz for rich, controlled bass
• 86 dB sensitivity for efficient output
• 4-ohm nominal impedance
• Recommended amplifier power range: 50–600W RMS

Built for Harsh Marine Environments

• IP65 water and dust resistant construction
• Fusion True-Marine™ durability standards
• Rugged grey sports grille for UV and corrosion resistance
• Marinized connectors for long-term reliability
• Designed to withstand salt fog, spray, sun exposure, and vibration
• Operating temperature range: 32°–122°F (0°–50°C)

Premium Construction & Acoustic Engineering

• 10" polypropylene cone for strength and acoustic precision
• Rubber surround for durability and flexibility
• 2" voice coil for improved heat dissipation and consistent output
• Excellent self-damping characteristics for clean, controlled bass
• Compass-safe distance: 205" (520 cm) to minimize magnetic interference with onboard electronics

Easy Surface-Mount Installation

• Surface-mount design simplifies marine installation
• Cutout diameter: 8.78"
• Mounting depth: 5.24" (133 mm)
• Overall dimensions (Diameter × Depth): 10.83" × 6.77" (275 × 172 mm)
• Includes water-resistant 2-pin cable assemblies (5.9" / 150 mm)
• Mounting hardware included (stainless screws included by some retailers)

Wide Fusion System Compatibility

• Designed for seamless pairing with Fusion marine stereos and amplifiers
• Compatible with Fusion-Link™ smart device app when connected to supported Fusion systems
• Ideal for expanding existing marine speaker systems or building a complete Fusion Signature sound system

What’s Included

• One (1) Fusion Signature Series 3i 10" Marine Subwoofer
• Two (2) water-resistant cable assemblies with 2-pin connector (5.9" / 150 mm)
• Mounting hardware (Phillips stainless screws included by some retailers)
• Installation instructions
• 3-Year Manufacturer Warranty

Technical Specifications

• Size: 10"
• Peak Power: 600W
• RMS Power: 300W
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Frequency Response: 30 Hz – 2 kHz
• Waterproof Rating: IP65
• Mounting Depth: 5.24" (133 mm)
• Dimensions: 10.83" × 6.77" (275 × 172 mm)
• Operating Temperature: 32°–122°F (0°–50°C)
• Compass Safe Distance: 205" (520 cm)

Quick Guide (pdf)
Brochure (pdf)