Alpine R2-SB10V

Performance & Power

• Power Handling: 300-750 watts RMS (2250 watts peak)
• Frequency Response: 26-200 Hz
• Sensitivity: 82.3 dB
• Impedance: 2 ohms (dual 4-ohm voice coils wired in parallel)
• Tuning Frequency: 36 Hz

Physical Dimensions

• Dimensions: 16-3/16″ W x 12-3/4″ H x 15″ D
• Enclosure Material: 3/4″ MDF (Medium Density Fiberboard)
• Finish: Black carpet with silver trim on front panel

Subwoofer Details

• Model: Alpine R2-W10D4
• Size: 10 inches
• Cone Material: Kevlar-reinforced pulp
• Dust Cap: Polypropylene/ceramic composite
• Surround: H.A.M.R. (High-Amplitude Multi-Roll) Santoprene rubber
• Voice Coil: Dual 4-ohm (wired in parallel for 2-ohm load)
• Magnet Structure: Double-stacked strontium-ferrite magnets
• Frame: Custom-designed cast aluminum

Installation Features

• Connection Type: Binding posts (accept up to 12-gauge speaker wire)
• Terminal Configuration: Single pair of binding posts with dual voice coils pre-wired in parallel
• Mounting: Free-standing enclosure design

Expansion Options

• Linking Capability: Compatible with second R2-SB10V enclosure
• Required Hardware: Alpine KTX-H10 linking kit (sold separately)
  • Includes aluminum rear link-plate
  • Steel-reinforced ABS front linking bracket
  • Creates secure connection between two enclosures
• Grille Option: Alpine KTE-10G.3 steel mesh grille (sold separately)

Technology Features

• H.A.M.R. Surround:
  • Allows large linear excursion and greater SPL
  • Maximizes cone area despite extreme excursion
  • Maintains control and stability at high volume levels
• Kevlar Reinforcement:
  • Adds strength and tear resistance to the woofer cone
  • Maintains the natural sound benefits of a pulp cone
  • Reduces distortion at high output levels
• Optimized Port Design:
  • Precision-tuned to 36 Hz for maximum low-frequency extension
  • Minimizes port noise and distortion
  • Enhances overall bass response
• Dual-Flare Pole Vent:
  • Optimizes airflow for better driver cooling
  • Increases power handling capability
  • Reduces compression under high power conditions

Sound Performance

• Deep, powerful bass with excellent extension down to 26 Hz
• Tight, controlled low-frequency response thanks to 36 Hz tuning
• Maintains clarity and impact even at high power levels
• Natural, musical bass reproduction with minimal distortion

Application Compatibility

• Ideal for adding bass to any car audio system
• Compatible with aftermarket amplifiers up to 750 watts RMS
• 2-ohm impedance makes it efficient with most mono subwoofer amplifiers
• Works especially well with Alpine power amplifiers
• Compact size makes it suitable for vehicles with limited space

Dual-System Expansion

• Start with one enclosure for basic bass enhancement
• Add second enclosure when budget allows or more output is desired
• Linking system creates a stable, integrated dual-subwoofer setup
• Matching aesthetics and performance across both enclosures
• Front and rear linking brackets ensure solid, secure connection

Comparison to R2-SB12V

• Smaller 10″ driver (vs. 12″ in R2-SB12V)
• More compact dimensions for tighter installation spaces
• Slightly higher tuning frequency (36 Hz vs. 35 Hz)
• Less sensitive (82.3 dB vs. 85 dB)
• Same power handling (750 watts RMS)
• Same expandability concept with dedicated linking kit

Optional Accessories

• KTX-H10 Linking Kit: Required for connecting two R2-SB10V enclosures
• KTE-10G.3 Grille: Optional protective grille for the subwoofer

Installation Notes

• Requires adequate cargo/trunk space for placement
• Best performance when placed against solid surface (rear of trunk/cargo area)
• Requires subwoofer amplifier capable of 2-ohm operation
• Recommended amplifier power: 300-750 watts RMS at 2 ohms
• Smaller dimensions than R2-SB12V make it suitable for more confined spaces