The Rockford Fosgate Prime R2D4-12 brings the low end to life with the deep rumble and solid impact that make bass feel present throughout the vehicle. Its 12-inch cone adds weight to kick drums and low-frequency notes, while the dual voice coil design and sealed-or-vented enclosure compatibility give installers useful flexibility when building the system.
| Subwoofer Specifications | |
|---|---|
| Sub Size | 12in |
| Sub Type | Standard |
| Sub Power RMS | 250 Watts |
| Sub Max Power | 500 Watts |
| Sub Impedance | Dual 4 Ohm |
| Voice Coils | Dual |
| Voice Coil Diameter | 2in (51 mm) |
| Performance & Thiele/Small Parameters | |
|---|---|
| Maximum Linear Excursion (Xmax) | 6.5mm |
| Sensitivity (dB @ 1W/1m) | 89dB |
| Resonant Frequency (Fs) | 34.9Hz |
| DC Resistance (Re) | 7.17Ohm |
| Voice Coil Inductance (Le) | 3.9mH |
| Total Q (Qts) | 0.60 |
| Electrical Q (Qes) | 0.66 |
| Mechanical Q (Qms) | 7.33 |
| Equivalent Compliance Volume (Vas) | 68.8Liters |
| Effective Cone Area (Sd) | 539.1cm² |
| Fitment & Dimensions | |
|---|---|
| Woofer Displacement | 0.046 cu. ft. (1.3 Liters) |
| Mounting Depth | 5.067 in. (128 mm) |
| Cutout Diameter | 11.25 in. (285 mm) |
| Magnet Weight (oz) | 47.7 oz. (1.35 kg) |
| Sealed Box Volume (Vb) | 1.02 cu. ft. (28.8 Liters) |
| Vented Box Volume (Vb) | 1.79 cu. ft. (50.6 Liters) |
| Speaker Connector | Dual 12 AWG compression |
| Shipping Weight | 9.9 Lbs. (4.49 kg) |
| Weight | 10 lbs |
|---|---|
| Sub Size | |
| Sub Impedance | |
| Sub Max Power | 500 Watts Max |
| Sub Power RMS | |
| Sub Type | Standard |
| Voice Coils | Dual |
| Series | Prime |
