Alpine R2-W10D4

$400.00

R Series 10″ subwoofer with dual 4-ohm voice coils

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Product Highlights

  • Type: 10″ subwoofer with dual 4-ohm voice coils
  • Power Handling: 300-750 watts RMS (375 watts per coil)
  • Peak Power: 2250 watts
  • Frequency Response: 26-200 Hz
  • Sensitivity: 82.8 dB
  • Voice Coil Configuration: Dual 4-ohm (can be wired for 2-ohm or 8-ohm loads)

Key Features

  • Premium Cone Construction:
    • Kevlar-reinforced pulp cone for strength and natural sound
    • HAMR Santoprene™ rubber surround allows extreme excursion
    • Oversized poly ceramic dust cap increases rigidity
  • Advanced Motor Design:
    • Double-stacked magnets for deeper bass
    • Compound Radius Curve pole geometry ensures symmetrical magnetic field
    • Progressive spider with reinforced layer tinsel leads
  • Flexible Installation:
    • Works well in sealed or ported enclosures
    • Dual voice coils for system wiring flexibility
    • Spring-loaded terminals accept up to 8-gauge wire

Package Contents

  • One 10″ dual 4-ohm voice coil subwoofer
  • Plastic trim ring
  • Two 4.5″ jumper wires with banana connectors
  • Installation documentation

Performance & Power

  • Power Handling: 300-750 watts RMS (375 watts per coil)
  • Peak Power Handling: 2250 watts
  • Frequency Response: 26-200 Hz
  • Sensitivity: 82.8 dB at 1 watt
  • Impedance: Dual 4-ohm voice coils (configurable for 2-ohm or 8-ohm loads)
  • Thiele/Small Parameters:
    • Vas: 18.2 liters
    • Fs: 32 Hz
    • Qts: 0.48
    • Xmax: 20mm

Physical Dimensions

  • Frame Diameter: 10.456 inches
  • Cutout Diameter: 9-1/8 inches
  • Mounting Depth: 5.975 inches (top-mount)
  • Mounting Height: 0.8 inches

Materials & Construction

  • Cone Material: Kevlar-reinforced pulp (two-piece structural parabolic design)
  • Surround: HAMR (High Amplitude Multi-Roll) Santoprene rubber
  • Dust Cap: Oversized inverted polypropylene/ceramic composite
  • Basket/Frame: Aluminum
  • Motor Structure:
    • Double-stacked magnets
    • Patented Compound Radius Curve pole geometry
    • Progressive spider with reinforced layer tinsel leads
  • Voice Coil: Dual 4-ohm design
  • Terminals: Spring-loaded posts (accept up to 8-gauge wire, pin connectors, or banana plugs)

Enclosure Recommendations

  • Sealed Box:
    • Minimum Volume: 0.48 cubic feet
    • Ideal Volume: 0.58 cubic feet
    • Maximum Volume: 0.93 cubic feet
  • Ported Box:
    • Minimum Volume: 0.83 cubic feet
    • Ideal Volume: 1.33 cubic feet with slot port (10″ × 1.5″ × 19.5″)
    • Maximum Volume: 1.38 cubic feet
    • Recommended Tuning Frequency: 37 Hz

Wiring Options

  • Parallel Wiring: 2-ohm load (using included jumpers)
  • Series Wiring: 8-ohm load (using included jumpers)
  • Note: Confirm amplifier compatibility when wiring for lower impedance
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