Rockford Fosgate M1D4-8 8" DVC 4-Ohm Color Optix™ Marine Subwoofer

Overview

Small size, real bass.

The Rockford Fosgate M1D4-8 is an 8" marine subwoofer built to add low-end where space is limited. It’s compact, clean, and does exactly what you need without overdoing it.

What It Is

A compact marine subwoofer with flexible wiring.

• 8" subwoofer
• Dual 4-ohm voice coils
• Switchable impedance (2Ω or 8Ω)
• Part of the Color Optix™ lineup

Performance

Right-sized output for smaller setups.

• 150 Watts RMS / 600 Watts Peak
• Frequency response: ~20 Hz – 750 Hz
• Sensitivity around 87 dB range

What Makes It Different

Built for flexibility and real-world installs.

• VERSA switch lets you change impedance without rewiring
• VAST surround increases cone area for better output
• Dual voice coil design for system matching

Easy to work into a wide range of setups.

Lighting & Integration

Part of the Color Optix ecosystem.

• Integrated RGB lighting
• Compatible with Rockford Color Optix controller
• Wide-angle LED output for even glow

Built for the Elements

Made for harsh environments.

• Element Ready™ design
• UV-stable materials
• Water and corrosion resistant construction
• IP-rated protection against water intrusion

What It’s Best For

• Smaller marine audio systems
• Tight install locations
• Systems needing clean, balanced bass
• Pairing with compact mono amps

What’s Included

• M1D4-8 Subwoofer
• Mounting Hardware
• LED wiring harness

Specifications

Size:

• 8"

Power Handling:

• 150 Watts RMS / 600 Watts Peak

Impedance:

• Dual 4Ω (switchable to 2Ω or 8Ω)

Frequency Response:

• ~20 Hz – 750 Hz

Voice Coil:

• Dual Voice Coil

Quick Questions

Q: Is this a high-output sub?
A: No—this is designed for clean, balanced bass in smaller systems.

Q: Can I run multiple of these?
A: Yes—great option if you want to scale output without going bigger.

Q: Does it require a special controller for lighting?
A: Only if you want to control colors—otherwise it works as a standard sub.

Note

• Designed for marine and outdoor use
• Best suited for small-to-mid size systems