Rockford Fosgate M2D4-12S 12" DVC 4-Ohm Color Optix™ Sealed Enclosure Marine Subwoofer

Overview

Big output, controlled bass.

The Rockford Fosgate M2D4-12S is a 12" marine subwoofer designed specifically for sealed enclosures. It delivers strong, accurate low-end while keeping things tight and predictable—no sloppy bass here.

What It Is

A sealed-box marine subwoofer built for performance.

• 12" subwoofer
• Dual 4-ohm voice coils
• Designed for sealed enclosures
• Part of the Color Optix™ lineup

Built for systems that want clean, controlled bass—not just noise.

Performance

Strong output with tight response.

• 400 Watts RMS / 1600 Watts Peak
• Frequency response: ~20 Hz – 750 Hz
• Sensitivity: ~88 dB

What Makes It Different

Built for sound quality and durability.

• Sealed enclosure optimized → Better control and accuracy
• Dual 4Ω voice coils → Wire to 2Ω or 8Ω
• VAST surround → More cone area, more output
• Designed to perform in smaller sealed boxes

This is about clean bass that actually sounds right.

Lighting & Integration

Part of the Color Optix system.

• Integrated RGB lighting
• Compatible with Rockford Color Optix controller (Sold Separately)
• Wide-angle LED output

Built for the Elements

Made for real outdoor use.

• Element Ready™ design
• UV-stable materials
• IP67-rated protection against water and dust
• Marine-grade connectors (Deutsch / Amphenol)

What It’s Best For

• Sealed enclosure marine systems
• Boats needing tight, accurate bass
• Systems where sound quality matters over boom
• Medium-to-high output builds

What’s Included

• M2D4-12S Subwoofer
• Stainless & sport grille options
• LED wiring harness
• Mounting hardware

Specifications

Size:

• 12"

Power Handling:

• 400 Watts RMS / 1600 Watts Peak

Impedance:

• Dual 4Ω (2Ω or 8Ω capable)

Enclosure Type:

• Sealed (recommended ~0.75 cu ft)

Voice Coil:

• Dual Voice Coil

Q: Does this need a box?
A: Yes—this is designed specifically for sealed enclosures.

Q: What kind of bass does it produce?
A: Tight, controlled, accurate bass—not boomy or loose.

Q: Can I run multiple?
A: Yes—great for scaling output while keeping sound quality.

Note

• Not designed for infinite baffle (free-air) installs
• Requires proper sealed enclosure for best performance