Eighteen Sound 12ND940
8Ω
Subwoofer
| Nominal diameter | 12″ / 310 mm |
| Resonance | 49 Hz |
| Q factor | 0.20 |
| Sensitivity | 97.3 dB |
| Linear excursion | ± 7.6 mm |
| Program power | 1200 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 97.3dB
- Frequency response 50 - 3000Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 49Hz
- Mechanical quality factor QMS 5.60
- Electrical quality factor QES 0.20
- Total quality factor QTS 0.20
Large signal parameters
- Maximum linear excursion (one way) xmax 7.6mm
- Air volume displaced at xmax VD 404cm³
- Power handling P 600W
- Program power Pmax 1200W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 5.0Ω
- Inductance (1kHz) LE 0.57mH
- VC Diameter 75mm
- Winding height HVC 19.7mm
Magnet
- Force factor Bl 22.2N/A
- Motor constant Bl/√RE 9.93N/√W
- Air gap height HAG 9mm
- Material Neodymium
Diaphragm
- Effective diameter 260mm
- Effective area SD 531cm²
- Moving mass (including air load) MMS 66g
- Moving mass MMD 57.4g
- Material Weather protected
Suspensions
- Stiffness KMS 6.06N/mm
- Compliance CMS 165µm/N
- Equivalent volume to the compliance VAS 64.8L
- Mechanical resistance RMS 3.63N·s/m
Dimensions
- Nominal diameter 12″
- 310mm
- Overall diameter 310mm
- Baffle cutout diameter 283mm
- Overall depth 147mm
- Flange thickness 13mm
- Mounting depth 134mm
- Volume occupied by the driver (estimated) 2.2L
- Net weight 4.3kg
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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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