Alpine SBR-S12D4 Type-R 12" Subwoofer

In Store Only Alpine SBR-S12D4  Type-R 12" Subwoofer

The SBR-S12D4 is a slot ported box designed and engineered in the USA, featuring the new 12" Type-R Subwoofer capable of handling a massive 1000 watts RMS!

This stylish enclosure is perfectly matched to the subwoofer for optimum output and sound quality. Built to play low and loud, the SBR-S12D4 delivers powerful, clean bass with exceptional accuracy and deeper bass excursion.

With new aesthetics and improved power handling over previous models, the new SBR-S12D4 sets the benchmark for looks and performance.

Size 12"
Power Handling RMS 1000W
Power Handling Peak 3000W
Power Range 300W-1000W
Frequency Response High 200Hz
Frequency Response Low 24Hz


  • Kevlar-Reinforced Carbon Fibre Cone
  • High Amplitude Multi Roll (HAMR) surround
  • Designed and Engineered in USA
  • Slot port box design
  • Heavy gauge screw terminals
  • 3000W Peak Power
  • 1000W RMS Power
  • Voice Coil configuration: 4ohm + 4ohm
  • Frequency Response: 26Hz-200Hz
  • Dimensions: (L x H x Wcm) 45 x 43 x 41



  • Sealed: 12"
  • Frequency Response: 24Hz-200Hz
  • Power Range: 300W - 1000W RMS
  • RMS Power Handling: 1000W
  • Peak Power Handling: 3000W
  • Magnet Weight: 127oz
  • Voice Coil Diameter: 65.5 mm (2.6")

Thiel-Small Parameters

  • Sensitivity (1W/1m): 84.9dB
  • DC Resistance: 3.8ohms + 3.8ohms
  • Inductance: 3.33 mH
  • Free Air Resonance: 28 Hz
  • Equivalent Stiffness: 46L
  • Mechanical Q: 6.04
  • Electrical Q: 0.52
  • Total Q: 0.48
  • Cone Area: 479cm²
  • Linear Excursion: 20 mm
  • Mechanical Travel: 72 mm

Note: Specifications are subject to change without notice

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  • Brand: Alpine
  • Product Code: Alpine SBR-S12D4
  • Availability: In Store Only
  • $449.00

Tags: 12", Type R