Down4Sound SB15D4
2x2Ω
2x4Ω
Subwoofer
| Nominal diameter | 15″ / 394 mm |
| Resonance | 31.1 Hz |
| Q factor | 0.77 |
| Sensitivity | 85.4 dB |
| Linear excursion | ± 21 mm |
| Program Power | 1000 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 85.4dB
Thiele & Small parameters
- Resonance frequency (free air) fS 31.1Hz
- Mechanical quality factor QMS 4.30
- Electrical quality factor QES 0.94
- Total quality factor QTS 0.77
Large signal parameters
- Maximum linear excursion (one way) xmax 21mm
- Air volume displaced at xmax VD 1224cm³
- 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 5.76mH
- VC Diameter 63.5mm
Magnet
- Force factor (in series) Bl 18.8N/A
- Motor constant Bl/√RE 7.6N/√W
Diaphragm
- Effective diameter 272mm
- Effective area SD 583cm²
- Moving mass MMS 278g
- Moving mass (without air load) MMD 267g
Suspensions
- Stiffness KMS 10.6N/mm
- Compliance CMS 94.5µm/N
- Equivalent volume to the compliance VAS 92.9L
- Mechanical resistance RMS 0.736N·s/m
Dimensions
- Nominal diameter 15″
- 394mm
- Overall diameter 394mm
- Baffle cutout diameter 346mm
- Mounting depth 180mm
- Volume occupied by the driver 5.38L
- Net weight 10.499kg
Export this driver to a simulation software:
Closed Box Simulator·
Speakerbench
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
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