ALPINE R2-W12D4
2x2Ω
2x4Ω
Subwoofer
| Nominal diameter | 12″ / 300 mm |
| Resonance | 30 Hz |
| Q factor | 0.51 |
| Sensitivity | 84.3 dB |
| Linear excursion | ± 20 mm |
| Program power | 1500 W |
.webp)
.webp)
.webp)
Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 84.3dB
- Frequency response 24 - 200Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 30Hz
- Mechanical quality factor QMS 6.51
- Electrical quality factor QES 0.55
- Total quality factor QTS 0.51
Large signal parameters
- Maximum linear excursion (one way) xmax 20mm
- Maximum excursion before damage xlim 36mm
- Air volume displaced at xmax VD 958cm³
- Power handling P 750W
- Program power Pmax 1500W
- Peak power Ppeak 2250W
Voice Coil
- Nominal impedance Z 2 x 4Ω
- DC resistance (in series) RE 7.0Ω
- Inductance (1kHz, in series, estimated) LE 6.59mH
- VC Diameter 65.5mm
- Former material Aluminum
Magnet
- Force factor (in series) Bl 25.9N/A
- Motor constant Bl/√RE 9.79N/√W
- Diameter 163mm
- Weight 4.08kg
- Material Strontium Ferrite
Diaphragm
- Effective diameter 247mm
- Effective area SD 479cm²
- Moving mass (including air load) MMS 279g
- Moving mass MMD 273g
- Material Pulp/Kevlar
Suspensions
- Stiffness KMS 9.9N/mm
- Compliance CMS 101µm/N
- Equivalent volume to the compliance VAS 32.8L
- Mechanical resistance RMS 8.07N·s/m
- Surround material Santoprene
Dimensions
- Nominal diameter 12″
- 300mm
- Overall diameter 320mm
- Baffle cutout diameter 274mm
- Overall depth 189mm
- Flange thickness 24mm
- Mounting depth 165mm
- Volume occupied by the driver 2.83L
- Frame material Aluminium
.webp)
Export this driver to a box design software:
Closed Box Simulator·
Speakerbench
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
Amplion.jpg.webp)
.jpg.webp)
.jpg.webp)
.jpg.webp)