Alpine R2-SB12V

$750.00

Halo Series 12″ linkable ported subwoofer enclosure

Twice the bass. Alpine’s R2-SB12V is a premium loaded subwoofer enclosure that makes it simple to add powerful, deep bass to your audio system. This ported enclosure comes pre-loaded with Alpine’s updated R2-W12D4 12″ subwoofer and is engineered for maximum bass impact. What makes this system unique is its expandability – when you’re ready for more bass, you can add a second R2-SB12V and the optional linking kit to create a dual-subwoofer system with twice the impact.

The R2-SB12V delivers impressive low-frequency performance with its specially tuned ported design and premium Kevlar-reinforced subwoofer. The enclosure is precision-tuned to 35 Hz to maximize low-end response, while the high-quality construction ensures durability and minimizes unwanted resonances. Perfect for bass enthusiasts who want both power and precision, this enclosure offers a convenient, high-performance bass solution with room to grow.

Product Highlights

  • Type: 12″ ported subwoofer enclosure
  • Subwoofer: Alpine R2-W12D4 (dual 4-ohm voice coils wired for 2-ohm load)
  • Power Handling: 750 watts RMS (2250 watts peak)
  • Frequency Response: 24-200 Hz
  • Sensitivity: 85 dB
  • Tuning Frequency: 35 Hz

Key Features

  • Premium Subwoofer Construction:
    • Kevlar-reinforced pulp cone for strength and natural sound
    • Santoprene rubber H.A.M.R. (High Amplitude Multi-Roll) surround
    • Dual double-stacked strontium-ferrite magnets
    • Custom-designed cast aluminum frame
    • Dual-flare pole vent for optimal cooling
  • Quality Enclosure Design:
    • Rugged 3/4″ MDF construction
    • Stylish black carpet covering with silver trim
    • Precision-tuned port for deep bass response
  • Expandable System:
    • Linkable with second R2-SB12V using optional KTX-H12 linking kit
    • Creates a compact, dual-subwoofer solution when linked

Package Contents

  • Ported enclosure loaded with one R2-W12D4 subwoofer
  • Product registration information
  • Safety notice

Performance & Power

  • Power Handling: 300-750 watts RMS (2250 watts peak)
  • Frequency Response: 24-200 Hz
  • Sensitivity: 85 dB
  • Impedance: 2 ohms (dual 4-ohm voice coils wired in parallel)
  • Tuning Frequency: 35 Hz

Physical Dimensions

  • Dimensions: 17-3/16″ W x 14-7/8″ H x 15-5/8″ D
  • Enclosure Material: 3/4″ MDF (Medium Density Fiberboard)
  • Finish: Black carpet with silver trim on front panel

Subwoofer Details

  • Model: Alpine R2-W12D4
  • Size: 12 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-SB12V enclosure
  • Required Hardware: Alpine KTX-H12 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-12G.3 steel mesh grille (sold separately)
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