Rockford Fosgate RM110D2B Prime 10" Dual 2-Ohm Subwoofer - Black

Rockford Fosgate RM110D2B Prime Marine 10" Dual 2-Ohm Subwoofer Marine-Grade Bass, Black Finish

Product Overview

The Rockford Fosgate RM110D2B is a black 10" dual 2-ohm subwoofer from the Prime marine range, purpose-built for marine watercraft and powersport applications where UV exposure, moisture, salt fog, and vibration are constant operating conditions. Featuring true marine-grade compliance with 100% UV stable ASA injection-moulded plastic parts, UV and salt-fog resistant Santoprene surround, injection-moulded mineral-filled polypropylene cone with UV inhibitors, Aramid fibre spider, ultra-flexible silicone lead wire, and proprietary corrosion-resistant spring-loaded push terminals, the RM110D2B is engineered to survive the Australian outdoor environment without the degradation that conventional automotive subwoofers experience in marine and powersport use.

Compatible with sealed, vented, and infinite baffle (free-air) installations, the RM110D2B offers broader enclosure flexibility than most marine subwoofers including direct free-air mounting in vessel transom panels and powersport enclosures where a sealed or ported box is impractical. The dual 2-ohm voice coil configuration wires in parallel for a 1-ohm load or in series for a 4-ohm load, providing amplifier pairing flexibility across a wide range of compatible mono amplifiers. Colour-matched black grille and removable trim ring included.

Key Specifications

• Driver size: 10"
• Voice coil configuration: Dual 2-ohm (DVC)
• Wiring options: 1 ohm (parallel) / 4 ohm (series)
• Enclosure compatibility: Sealed / vented / infinite baffle
• Plastic parts: 100% UV stable ASA injection-moulded
• Cone: Injection-moulded mineral-filled polypropylene with UV inhibitors
• Surround: UV and salt-fog resistant Santoprene
• Spider: Moisture, tear and fatigue-resistant Aramid fibre
• Lead wire: Ultra-flexible fully insulated silicone
• Input terminals: Proprietary corrosion-resistant spring-loaded push terminals
• Grille: Colour-matched black (included)
• Trim ring: Removable (included)
• Colour: Black
• True marine-grade compliant
• Power handling: Confirm with supplier
• Frequency response: Confirm with supplier
• Sensitivity: Confirm with supplier
• Mounting depth: Confirm with supplier
• Cutout diameter: Confirm with supplier
• Shipping weight: Confirm with supplier

Features & Benefits

• True marine-grade compliance: The RM110D2B meets Rockford Fosgate's true marine-grade standard a specification that addresses the specific failure modes of speakers used in UV-intense, moisture-rich, and salt-laden environments. Not a weatherised automotive subwoofer, but a driver purpose-designed for the outdoor marine and powersport environment from the component level up.
• 100% UV stable ASA injection-moulded plastic parts: ASA (Acrylonitrile Styrene Acrylate) is a UV-stabilised engineering thermoplastic specifically selected for its resistance to UV-induced colour fading, surface degradation, and structural embrittlement under prolonged outdoor sun exposure a critical requirement for subwoofers permanently installed in Australian watercraft and UTVs exposed to direct sunlight.
• UV and salt-fog resistant Santoprene surround: Santoprene is a thermoplastic rubber material with proven UV and salt fog resistance, maintaining its mechanical compliance properties over extended outdoor exposure where standard rubber surrounds crack and foam surrounds degrade. Consistent compliance is essential for subwoofer linearity and power handling over the product's service life.
• Injection-moulded mineral-filled polypropylene cone with UV inhibitors: Mineral filling increases the stiffness and dimensional stability of the polypropylene cone, resisting moisture absorption and maintaining pistonic accuracy at high excursion levels. UV inhibitors prevent polymer chain degradation under direct sun exposure that would otherwise cause embrittlement and cracking over time.
• Moisture, tear and fatigue-resistant Aramid fibre spider: Aramid fibre resists moisture absorption that would change the spider's compliance characteristics in humid and wet marine environments, and provides superior tear and fatigue resistance compared to standard fabric spiders during high-excursion subwoofer use.
• Ultra-flexible fully insulated silicone lead wire: Silicone lead wire maintains flexibility across a wide temperature range from cold morning starts to high summer temperatures on Australian vessels and UTVs and resists cracking and hardening over time in outdoor environments where standard PVC insulation degrades. Ultra-flexible construction also extends fatigue life at high excursion.
• Proprietary corrosion-resistant spring-loaded push terminals: Spring-loaded push terminals allow fast, tool-free wiring connection without the galvanic corrosion risk of standard brass or steel binding posts in saltwater environments. The proprietary corrosion-resistant material specification addresses the accelerated terminal corrosion common in marine electrical environments.
• Dual 2-ohm voice coil 1-ohm parallel or 4-ohm series wiring: DVC configuration provides amplifier pairing flexibility: wire in parallel for a 1-ohm load to maximise power from a 1-ohm stable mono amplifier, or wire in series for a 4-ohm load for specific amplifier configurations. Versatile across the range of Rockford Fosgate Power Marine and Punch Marine mono amplifiers.
• Sealed, vented, and infinite baffle installation compatibility: Unlike most marine subwoofers specified for sealed or vented enclosures only, the RM110D2B is confirmed compatible with infinite baffle (free-air) installation allowing direct mounting in vessel transom panels, bulkheads, and powersport enclosures where building a sealed or ported box is impractical or space-prohibitive.
• Colour-matched black grille and removable trim ring: The 100% UV stable colour-matched black grille integrates cleanly with the black driver assembly for a factory-finished appearance. The removable trim ring allows clean installation in custom flush-mount applications.
• Available in black or white: The RM110D2B is the black finish variant. A white finish version is available separately confirm part number with your supplier.

Technical Specs

Compatible With

• Rockford Fosgate Power Marine mono amplifiers: TM500X1br (1-ohm parallel wiring)
• Rockford Fosgate Punch Marine mono amplifiers: PM300X1 (2-ohm or 4-ohm series wiring confirm with supplier)
• Sealed, vented, and infinite baffle marine enclosures confirm recommended enclosure volume with Rockford Fosgate documentation before building a sealed or vented box
• Marine vessels: bow riders, ski boats, pontoons, fishing boats, and tinnies with transom or hull subwoofer mounting locations
• Powersport applications: UTVs and side-by-sides with under-seat or roll-cage subwoofer enclosures
• White finish variant available separately confirm part number with supplier

Frequently Asked Questions

What impedance does the RM110D2B present to the amplifier? The RM110D2B has dual 2-ohm voice coils. Wired in parallel, it presents a 1-ohm load suitable for 1-ohm stable mono amplifiers. Wired in series, it presents a 4-ohm load for 4-ohm stable amplifiers. Confirm your amplifier's stable impedance rating before wiring.

Can the RM110D2B be installed in infinite baffle (free-air)? Yes. The RM110D2B is confirmed compatible with sealed, vented, and infinite baffle installations allowing direct mounting in vessel transom panels and powersport enclosures without requiring a dedicated subwoofer box. Confirm the recommended free-air parameters with Rockford Fosgate documentation to ensure adequate performance in your specific installation.

Why is Santoprene used instead of rubber or foam for the surround? Santoprene is a thermoplastic rubber material with proven UV and salt fog resistance that conventional rubber and foam surrounds cannot match in outdoor marine environments. Rubber surrounds can crack under prolonged UV exposure; foam surrounds degrade in moisture. Santoprene maintains consistent mechanical compliance over the product's outdoor service life directly contributing to long-term subwoofer performance and reliability.

What is the difference between the RM110D2B and the white version? The RM110D2B is the black finish variant with a colour-matched black grille. A white finish version is available separately confirm the part number with your supplier. All specifications are otherwise identical between the two colour variants.

Is the RM110D2B suitable for permanent outdoor installation on an Australian vessel? Yes. The RM110D2B meets Rockford Fosgate's true marine-grade compliance standard with 100% UV stable ASA plastic parts, Santoprene surround, Aramid fibre spider, silicone lead wire, and corrosion-resistant terminals all purpose-selected for the UV intensity, salt fog, moisture, and vibration conditions of Australian coastal and estuarine watercraft.