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Rockford Fosgate R2SD4-12 Prime R2 Series 12″ Shallow Subwoofer With Dual 4-ohm Voice Coils

Rockford Fosgate R2SD4-12 Prime R2 Series 12″ Shallow Subwoofer With Dual 4-ohm Voice Coils


SKU: R2SD4-12
Product by: Rockford

If you don’t have enough room for bass, the R2 shallow subwoofers is the solution you’re looking for.  Because of the raised motor structure, these drivers can fit in small areas. Mica injected polypropylene cones ensure clear bottom tones. Stamp-cast baskets have spider ventilation to keep the motor cool. These shallow subwoofers are designed for sealed enclosures.

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SKU: R2SD4-12


sku: R2SD4-12

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Key Features:

  • 12″ shallow-mount subwoofer with dual 4-ohm voice coils
  • mica-injected polypropylene woofer cone with poly-foam surround
  • stamped solid-steel frame
  • power range: 100-250 watts RMS (500 watts peak power)
  • frequency response: 29-250 Hz
  • sensitivity: 85 dB
  • top-mount depth: 3-5/8″
  • sealed box volume: 0.9 cubic feet
  • ported box volume: 1.79 cubic feet
  • warranty: 1 year

Features & specs

Size 12 -inch
Impedance 2 ohms
Cone Material Mica injected Poly
Surround Material Poly-Foam
Ideal Sealed Box Volume (cubic feet) 0.9
Ideal Ported Box Volume (cubic feet) 1.79
Port diameter (inches) 4
Port length (inches) 11.8
Free-Air No
Dual Voice Coil Yes
Sensitivity 85 dB at 1 watt
Frequency Response 29 – 250 Hz
Max RMS Power Handling 250
Peak Power Handling (Watts) 500
Top Mount Depth (inches) 3 5/8
Bottom Mount Depth (inches) N/A
Cutout Diameter or Length (inches) 11 1/8
Vas (liters) 65.4
Fs (Hz) 29.7
Qts 0.66
Xmax (millimeters) 10
Parts Warranty 1 Year
Labor Warranty 1 Year


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Additional information

Subwoofer size

Airspace Requirements




Shallow Woofer Design


Dual 4 ohm

Frequency Response, Low


Subwoofer Power Handling RMS