Rockford Fosgate R2D4-12
2x2Ω
2x4Ω
Subwoofer
| Nominal diameter | 12″ / 305 mm |
| Resonance | 34.9 Hz |
| Q factor | 0.60 |
| Sensitivity | 88.5 dB |
| Linear excursion | ± 6.5 mm |
| Program Power | 500 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 88.5dB
Thiele & Small parameters
- Resonance frequency (free air) fS 34.9Hz
- Mechanical quality factor QMS 7.33
- Electrical quality factor QES 0.66
- Total quality factor QTS 0.60
Large signal parameters
- Maximum linear excursion xmax 6.5mm
- Air volume displaced at xmax VD 350cm³
- Power handling P 250W
- Program power Pmax 500W
Voice Coil
- Nominal impedance Z 2 x 4Ω
- DC resistance (in series) RE 7.2Ω
- Inductance (1kHz, in series) LE 3.9mH
- VC Diameter 51mm
Magnet
- Force factor (in series) Bl 17.2N/A
- Motor constant Bl/√RE 6.42N/√W
- Weight 1.35kg
Diaphragm
- Effective diameter 262mm
- Effective area SD 539cm²
- Moving mass MMS 125g
- Moving mass (without air load) MMD 116g
Suspensions
- Stiffness KMS 5.99N/mm
- Compliance CMS 167µm/N
- Equivalent volume to the compliance VAS 68.8L
- Mechanical resistance RMS 3.72N·s/m
Dimensions
- Nominal diameter 12″
- 305mm
- Baffle cutout diameter 285mm
- Mounting depth 128mm
- Volume occupied by the driver 1.3L
Export this driver to a simulation software:
Closed Box Simulator·
Speakerbench
WinISD
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Hornresp
QSpeakers
SpeakerSim
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