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Alpine RS-SB12 Single 12” R-Series Shallow Preloaded Subwoofer Enclosure.   With an ultra-shallow enclosure design and powerful sound output, the R-Series Shallow Preloaded Subwoofer Enclosures give you the best of both worlds in size and sound.




Now you don’t have to choose between bass and space! Alpine’s R-Series Shallow Preloaded Subwoofer Enclosure measures at a minimal 5.25” deep to deliver a loud and fun sound in most vehicle applications. Rubber “feet” are adjustable in height to accommodate uneven vehicle floors.




Don’t let the size fool you – the enclosures feature the same motor movement (20MM of 1-way excursion) as the full-size R2-Series Subwoofers for extreme output in a shallow woofer design. At the heart of the R-Series Shallow Subwoofers is an oversized 4-inch voice coil that houses the lightweight and powerful neodymium magnet for 600W RMS of power handling.



Alpine RS-SB12 Single 12” R-Series Shallow Preloaded Subwoofer Enclosure


    • Optimal sealed cabinet quality  
    • Aluminum Dust Cap
    • Neodymium Magnet   
    • Alpine Gen2 DD Linear Magnetic Circuit  
    • CARB compliant ¾” MDF construction  
    • Premium Alpine embroidered black carpet 
    • Alpine-branded terminal cup 
    • Pre-installed steel mesh grille 
    • Includes a 12” R-Shallow Subwoofer (RS-W12D4)
    • Rubber, modular stackable foot design

    What's in the Box:

    • Sealed Cabinet with (1) 12” R-Series Shallow Subwoofer 
    • Mounting Brackets 
    • Owner’s Manual
    • Warranty Information 
    • Online product registration information 

    • Dimensions: 26.5” W x 5.25” H x 17” D
    • 600W RMS Power Handling 
    • Frequency response: 26Hz – 200Hz 
    • Dual 4Ω voice coils wired in parallel for a 2Ω load (compatible with S-A60M or R-A75M) 
    • Nominal Impedance: 2Ω 
    • Voice Coil: 4”(101.6mm)
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