Alpine SBW-D12S4 – Bass Series 12″ Single Subwoofer Enclosure


Alpine Bass Series Single 12″ Enclosure

– 250W RMS Power Handling
– 750W Peak Power Handling
– Custom Sealed Enclosure

Out of stock

SKU: SBW-S12S4 Category:


The SBW-S12S4 combines the Bass Series 12” subwoofer with a perfectly matched custom sealed enclosure, precisely designed and engineered to produce the best sounding bass. The SBW-S12S4 subwoofer uses a polypropylene and mica damped cone assembly to keep the cone stiff and light for great sounding bass tones, whilst the high-excursion polyfoam surround provides high output bass.

Building on Alpine’s long heritage in subwoofer engineering, the SBW-S12S4 subwoofer enclosure spreads the passion for deep, hard hitting bass.



  • Custom Sealed Dual Enclosure
  • 2 x W12D4 Bass Series Sub Pre Installed
  • 12” Single 4Ω Subwoofer
  • Progressive Wavelet Ribs (P.W.R.) Cone Design
  • Heavy Gauge Screw Terminals
  • Polypropylene and Mica Cone
  • Polyfoam Surround
  • High Strength Custom Steel Frame
  • 8 AWG Push Terminals
  • Progressive Polyester Spider
  • 2 Piece Yoke with Vented Pole Motor Structure
  • Optimised Magnet Circuit
  • Grille Included



  • 250W RMS Power Handling
  • 7500W Peak Power Handling
  • Dimensions (cm): 39.6 L x 41.6 W x 29.6 H