Rockford Fosgate - R2SD4-12 Prime 12 inch Dual 4 Ohm Slim Subwoofer 250W RMS

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Product Highlights:

12" Prime R2 4-Ohm DVC Shallow Subwoofer

When you have no space for bass, our Prime R2SD4-12 shallow subwoofer will satisfy your need. This 12” subwoofer handles 200 Watts RMS and the 4-Ohm Dual Voice Coil design lets you to wire them in various configurations.

  • 12 AWG compression terminals
  • Anodized aluminum voice coil former
  • Optimized for sealed enclosures
  • Mica injected polypropylene cone
  • Linear spider with embedded 16 AWG tinsel leads
  • StampCast basket with integrated spider venting
  • Integrated PVC trim ring
  • Shallow Motor Assembly


When you have no space for bass, our R2 12" shallow subwoofer can help satisfy your need for low frequency music. These drivers can fit in tight spaces due to an elevated motor structure that reduces speaker depth. Mica injected polypropylene cones make sure bass notes are clean and accurate. Stamp-cast baskets feature spider venting typically reserved for traditional depth mounted models to keep the motor cool! These shallow subwoofers are optimized for sealed enclosures.

CEA-2031 Compliant: CEA-2031 Guidelines
Size: 12"
Nominal Impedance: Dual 4-Ohm
Power Handling (Watts RMS): 250 Watts RMS 
500 Watts Max
Voice Coil Diameter: 2" (50 mm)
Magnet Weight (oz): 51 oz. (1.45 kg.)
Speaker Connector: Dual 12 AWG compression
Fs (Hz): 30.3
Re (Ohms): 6.80
Le (mH): 4.2
Qms: 7.00
Qes: 0.72
Qts: 0.65
Vas (Liters): 65.4
Sd (cm2): 534.8
SPL (dB @ 1w/1m): 85
Xmax (mm): 10
Woofer Displacement (in): 0.039 cu.ft. (1.1 Liters)
Cutout Diameter (in): 11.25 in. (285 mm)
Mounting Depth (in): 3.602 in. (91.5 mm)
Shipping Weight: 12.013 Lbs. (5.44 kg.)


Power handling on Rockford Fosgate speakers conform to CEA-2031 industry standards.
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Klippel Verified

Klippel Verified

Klippel is a speaker certification program allowing us to deliver the best possible subwoofers.
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Stitched Tinsel Leads

Stitched Tinsel Leads

Improved reliability and performance by reducing fatigue and possible shorting.
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Anodized Aluminum Voice Coil Former

Anodized Aluminum Voice Coil Former

Rockford Fosgate subwoofers use anodized aluminum voice coil formers that provide superior heat...
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