ALPINE R2-W12D2
2x2Ω
2x4ΩSubwoofer
| Nominal diameter | 12″ / 300 mm |
| Resonance | 29 Hz |
| Q factor | 0.41 |
| Sensitivity | 85.1 dB |
| Linear excursion | ± 20 mm |
| Program power | 1500 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 85.1dB
- Frequency response 24 - 200Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 29Hz
- Mechanical quality factor QMS 6.32
- Electrical quality factor QES 0.44
- Total quality factor QTS 0.41
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 2Ω
- DC resistance (in series) RE 3.8Ω
- Inductance (1kHz, in series, estimated) LE 3.47mH
- VC Diameter 65.5mm
- Former material Aluminum
Magnet
- Force factor (in series) Bl 20.5N/A
- Motor constant Bl/√RE 10.5N/√W
- Diameter 189mm
- Weight 4.08kg
- Material Strontium Ferrite
Diaphragm
- Effective diameter 247mm
- Effective area SD 479cm²
- Moving mass (including air load) MMS 267g
- Moving mass MMD 261g
- Material Pulp/Kevlar
Suspensions
- Stiffness KMS 8.85N/mm
- Compliance CMS 113µm/N
- Equivalent volume to the compliance VAS 36.9L
- Mechanical resistance RMS 7.68N·s/m
- Surround material Santoprene
Dimensions
- Nominal diameter 12″
- 300mm
- Overall diameter 320mm
- Baffle cutout diameter 274mm
- Overall depth 187mm
- Flange thickness 24mm
- Mounting depth 163mm
- Volume occupied by the driver 2.83L
- Frame material Aluminium
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Export this driver to a box design software:
Closed Box Simulator·
Speakerbench
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
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