R2-W10D4

The Alpine R2-W10D4 is one of the strongest all-around 10-inch subwoofers in the current mid/high-performance market because it balances sound quality, output, thermal handling, and daily-driver reliability extremely well. The biggest buying considerations are power handling, enclosure type, mounting depth, and whether you want SQL-style musical bass or aggressive SPL output.

The R2-W10D4 is Alpine’s updated next-generation R-Series subwoofer and improves on the older Type-R platform with:

• Larger motor structure
• Improved cooling
• Better cone control
• Deeper low-frequency extension
• Higher excursion capability

Key Features

• 10-inch subwoofer
• Dual 4Ω voice coils
• 750W RMS power handling
• 2250W peak power
• Alpine HAMR surround technology
• Kevlar-reinforced pulp cone
• Oversized double-stacked ferrite magnets
• Integrated Faraday ring
• High-excursion design
• Twist-lock grille mounting system
• Optimized airflow cooling system

Performance Specifications

• RMS Power: 750W
• Peak Power: 2250W
• Impedance: Dual 4Ω
• Frequency Response: 24Hz–200Hz
• Sensitivity: 83.1 dB
• Mounting Depth: ~6.2"
• Recommended Sealed Box:
  • ~0.55 ft³
• Recommended Ported Box:
  • ~0.85–1.0 ft³ tuned enclosure