Bassline 12″ Single Subwoofer Enclosure

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Building on Alpine’s long heritage in subwoofer engineering, Alpine created a subwoofer line that could spread the passion for deep, hard hitting bass. Bassline subwoofers use 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.

Bassline subwoofers are known for their reliability, small size and big power output.

The SBL-S12S4 combines the new Bassline 12″ Subwoofer with a perfectly matched custom sealed enclosure, precisely designed and engineered to produce the best sounding bass.



  • Custom Sealed Enclosure
  • SWA-12S4 12″ Bassline Subwoofer Pre-installed
  • Heavy Gauge Screw Terminals
  • Grille Included


  • 250W RMS Power Handling
  • 750W Peak Power Handling
  • Dimensions (cm): 39.6 L x 41.6 W x 29.6 H



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