(2) Alpine R2-SB12V Loaded 12" 750w R2-W12D4 Subwoofers+Ported Sub Enclosure Box

$1,069.85 $1,289.85 Sold out
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Product Description
Package Includes:
  • (2) Alpine R2-SB12V 12” R-Series 750W RMS Halo Subwoofer in Sub Box Enclosure 2 Ohm
  • (1) Alpine KTX-H12 Linking Kit for (2) S-SB12V or R-SSB12V 12" Subwoofer Enclosures

Description of R2-SB12V:

The next generation of sound performance is here with the new R-Series Halo Preloaded Subwoofers featuring the new R-Series “R2” subwoofers for more accurate and authoritative bass.


  • Unique ProLink™ Design
    ProLink™ is unique to Alpine and allows you to link two R2-SB12V enclosures together using an optional KTX-H12 linking kit to create a dual subwoofer enclosure.
  • Stand Out in the Crowd
    Drawing inspiration from the sleek, tapered lines and clean silver finish of the Alpine Halo display, the R2-SB12V shares the same unique, curved edges outlined by a silver trim and a metallic front baffle for a matching system aesthetic.
  • Improved Performance
    The new R-Series subwoofers now feature larger, double-stacked magnets that contribute more motor force for deeper bass and tighter bass control compared to the previous generation.


  • Size: 12”
  • Weight: 50 lbs
  • Dimensions: 17” x 14.625” x 15”
  • Frequency Response: 24Hz - 200Hz
  • Power Range: 300W - 750W RMS
  • Power Handling: 750W RMS / 2250W Peak
  • Magnet Weight: 144 oz
  • Voice Coil Diameter: 65.5 mm (2.6”)
  • Linear Excursion (Xmax): 20 mm


  • Sensitivity (1W/1m): 85 dB
  • DC Resistance (Re): 1.9? + 1.9?
  • Free Air Resonance (Fs): 29 Hz
  • Equivalent Stiffness: 36.9 L
  • Mechanical Q (Qms): 6.32
  • Electrical Q (Qes): 0.44
  • Total Q (Qts): 0.41
  • Cone Area (Sd): 479 cm2
  • Linear Excursion (Xmax): 20 mm
  • Mechanical Travel (Xmech): 72 mm

Description of KTX-H12:

Enclosure Stacking Features
Unique to Alpine, the subwoofer 12-inch enclosures are available as a single or “linked” format with an optional mounting bracket. This innovative design allows the sound consumer the option to easily add more bass to their system.

KTX-H12 solution that mounts to the face of the subwoofer and links for a sturdy, dual-subwoofer enclosure. The silver enclosure trim matches the steel bracketing and Halo display trim for a synergized look.


  • Aluminum rear link plate
  • 12-inch Front ABS / Steel reinforced port link
  • Center link stabilizing dowels
  • Alpine logo plate
  • All hardware included
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