Alpine RSB-W12D4 R-Series 12″ Subwoofer Enclosure (2250W Peak Power)

Alpine RSB-W12D4 R-Series 12″ Subwoofer Enclosure (2250W Peak Power)

  • $449.00
    Unit price per 
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Alpine’s RSB-W12D4 is a slot ported box design featuring the all-new 12″ R-Series Subwoofer which has gained significant engineering refinements that substantially improve the sonic performance of their predecessors. Alpine’s efforts were concentrated on re-engineering the motor and circuit design, crafting a performance sub that offers exceptional sound and resolution, well exceeding it’s peers.

This stylish enclosure is perfectly matched to the subwoofer for optimum output and sound quality. Built to play low and loud, the RSB-W12D4 delivers powerful, clean bass with exceptional accuracy and deeper bass excursion. Painstaking engineering, coupled with decades of expertise in high-end audio design, Alpine’s all-new R-Series Subwoofer enclosure continues it’s unrivalled reputation in benchmark performance and sound quality.


  • Utilises R-W12D4
  • 12″ Dual Ohm DVC Subwoofer
  • Multi-layer Hybrid Cone
  • Slot port box design
  • Heavy gauge screw terminals
  • High Amplitude Multi Roll (HAMR) Surround
  • Rigid Dust Cap
  • Neodymium Magnet
  • Dual Gap Voice Coil
  • KTE-12G Subwoofer Grille Included
  • 2250W Peak Power
  • 750W RMS Power
  • Voice Coil configuration: 4ohm + 4ohm
  • Frequency Response: 24Hz-200Hz
  • Dimensions: (L x H x Wcm) 45 x 43 x 41



  • Sealed: 12″
  • Frequency Response: 24Hz-200Hz
  • RMS Power Handling: 750W
  • Peak Power Handling: 2250W

Note: Specifications are subject to change without notice.