Down4Sound SB12D4
2x2Ω
2x4Ω
Subwoofer
| Nominal diameter | 12″ / 316 mm |
| Resonance | 29.9 Hz |
| Q factor | 0.52 |
| Sensitivity | 85.8 dB |
| Linear excursion | ± 21 mm |
| Program Power | 1000 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 85.8dB
Thiele & Small parameters
- Resonance frequency (free air) fS 29.9Hz
- Mechanical quality factor QMS 3.62
- Electrical quality factor QES 0.60
- Total quality factor QTS 0.52
Large signal parameters
- Maximum linear excursion (one way) xmax 21mm
- Air volume displaced at xmax VD 1071cm³
- Power handling P 500W
- Program power Pmax 1000W
Voice Coil
- Nominal impedance Z 2 x 4Ω
- DC resistance (in series) RE 6.1Ω
- Inductance (1kHz, in series, estimated) LE 4.87mH
- VC Diameter 63.5mm
Magnet
- Force factor (in series) Bl 20.3N/A
- Motor constant Bl/√RE 8.21N/√W
- Height 90mm
Diaphragm
- Effective diameter 255mm
- Effective area SD 510cm²
- Moving mass MMS 216g
- Moving mass (without air load) MMD 208g
Suspensions
- Stiffness KMS 7.62N/mm
- Compliance CMS 131µm/N
- Equivalent volume to the compliance VAS 48.6L
- Mechanical resistance RMS 0.764N·s/m
Dimensions
- Nominal diameter 12″
- 316mm
- Overall diameter 316mm
- Baffle cutout diameter 276mm
- Mounting depth 173mm
- Volume occupied by the driver 4.25L
- Net weight 10.0kg
Export this driver to a simulation software:
Closed Box Simulator·
Speakerbench
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
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