Rockford Fosgate Prime R2SD4-12 12in Dual 4 Ohm 250 Watts Subwoofer

Rockford Fosgate Prime R2SD4-12 12-inch shallow subwoofer with 250 Watts RMS power handling, 500 Watts max power, dual 4-ohm voice coils, and a mica-reinforced polypropylene cone. Its space-saving design is optimized for sealed enclosures.

$179.99

15 in stock

Description

The Sub At A Glance:

  • Shallow design: An elevated motor structure reduces mounting depth, helping the 12-inch subwoofer fit into tight spaces.
  • Power handling: Handles 250 Watts RMS and 500 Watts max power.
  • Dual voice coils: Dual 4-ohm voice coils provide versatile wiring options, with a 2-inch (50 mm) voice coil diameter.
  • Rigid cone: The mica-reinforced polypropylene cone supports clean, accurate bass reproduction.
  • Durable suspension: A linear spider with embedded 16 AWG tinsel leads is built for dependable operation.
  • Vented frame: The StampCast basket features integrated spider venting to help keep the motor cool.
  • Sealed-enclosure ready: Optimized for sealed enclosures when installation space is limited.
  • Secure connections: 12 AWG compression terminals provide a solid connection for speaker wiring.

The Rockford Fosgate R2SD4-12 brings low-frequency depth and impact to vehicles where a conventional-depth subwoofer may not fit. Its shallow design lets you add the rumble and weight that make bass lines feel present in the cabin, while the mica-reinforced polypropylene cone keeps each note clean and accurate. Optimized for sealed enclosures, it is a practical choice for adding satisfying bass without demanding excessive installation space.

Subwoofer Specifications
Sub Size 12in
Sub Type Shallow
Sub Power RMS 250 Watts
Sub Max Power 500 Watts
Sub Impedance Dual 4 Ohm
Voice Coils Dual
Voice Coil Diameter 2in (50 mm)
Performance & Thiele/Small Parameters
Maximum Linear Excursion (Xmax) 10mm
Sound Pressure Level (SPL) @ 1W/1m 85dB
Resonant Frequency (Fs) 30.3Hz
DC Resistance (Re) 6.80Ohm
Voice Coil Inductance (Le) 4.2mH
Total Q (Qts) 0.65
Electrical Q (Qes) 0.72
Mechanical Q (Qms) 7.00
Equivalent Compliance Volume (Vas) 65.4Liters
Effective Cone Area (Sd) 534.8cm²
Fitment & Dimensions
Woofer Displacement 0.039 cu. ft. (1.1 Liters)
Mounting Depth 3.602 in. (91 mm)
Cutout Diameter 11.25 in. (285 mm)
Magnet Weight (oz) 51 oz. (1.45 kg.)
Sealed Box Volume (Vb) 0.9 cu. ft. (25.4 Liters)
Vented Box Volume (Vb) 1.79 cu. ft. (50.6 Liters)
Speaker Connector Dual 12 AWG compression
Shipping Weight 12.013 Lbs. (5.44 kg.)

Additional information

Weight 13 lbs
Sub Size

Sub Impedance

Sub Max Power

500 Watts Max

Sub Power RMS

Sub Type

Shallow

Voice Coils

Dual

Series

Prime