R2-W8D4

The Alpine R2-W8D4 is a next-generation 8-inch R-Series subwoofer engineered for powerful bass performance in compact spaces. Featuring Alpine’s updated R-Series motor structure, HAMR surround technology, Kevlar-reinforced pulp cone, and dual 4-ohm voice coils, the R2-W8D4 delivers deep, tight, and highly accurate bass while handling up to 350 watts RMS.

Designed for both sealed and ported enclosures, the R2-W8D4 features a larger double-stacked magnet assembly and integrated Faraday ring for improved motor force, reduced distortion, and tighter bass control compared to previous generations. Its compact mounting depth makes it ideal for trucks, under-seat applications, and stealth audio builds where space is limited.

Features

• 8” R-Series high-performance subwoofer
• Dual 4-ohm voice coil configuration
• Kevlar reinforced pulp cone
• Polypropylene/ceramic composite dust cap
• HAMR (High Amplitude Multi-Roll) surround
• Large double-stacked magnet structure
• Integrated Faraday ring for reduced distortion
• Twist-lock grille mounting system
• Push-type speaker terminals
• High-resolution audio compliant
• Designed for sealed or ported enclosures

Specifications

• Subwoofer Size:
  • 8”
• RMS Power Handling:
  • 350 Watts RMS
• Peak Power Handling:
  • 1000 Watts Peak
• Voice Coil Configuration:
  • Dual 4-Ohm
• Frequency Response:
  • 30Hz – 200Hz
• Sensitivity:
  • 83.5 dB
• Mounting Depth:
  • 4-3/8”
• Cutout Diameter:
  • 6-15/16”
• XMAX:
  • 12mm
• Magnet Weight:
  • 56 oz
• Voice Coil Diameter:
  • 2.6”
• Recommended Sealed Box:
  • 0.25 ft³
• Recommended Ported Box:
  • 0.68 ft³ tuned to 39Hz

Included In The Box

• Alpine R2-W8D4 subwoofer
• Cosmetic trim ring
• Dual voice coil jumper wires
• Owner’s manual