Eighteen Sound 15W750
4Ω
8ΩSubwoofer
Nominal diameter | 15″ / 380 mm |
Resonance | 39 Hz |
Q factor | 0.29 |
Sensitivity | 96.6 dB |
Linear excursion | ± 8 mm |
Program Power | 1200 W |
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- Sensitivity (1W, 1m, infinite baffle) SPL1W 96.6dB
- Frequency response 40 - 4300Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 39Hz
- Mechanical quality factor QMS 6.20
- Electrical quality factor QES 0.30
- Total quality factor QTS 0.29
Large signal parameters
- Maximum linear excursion xmax 8mm
- Air volume displaced at xmax VD 680cm³
- Power handling P 600W
- Program power Pmax 1200W
Voice Coil
- Nominal impedance Z 4Ω
- DC resistance RE 2.7Ω
- Inductance (1kHz) LE 0.73mH
- VC Diameter 75mm
- Winding material Aluminum
Magnet
- Force factor Bl 14N/A
- Motor constant Bl/√RE 8.52N/√W
- Material Ferrite
Diaphragm
- Effective diameter 329mm
- Effective area SD 850cm²
- Moving mass MMS 89.5g
- Moving mass (without air load) MMD 72g
Suspensions
- Stiffness KMS 5.38N/mm
- Compliance CMS 186µm/N
- Equivalent volume to the compliance VAS 253L
- Mechanical resistance RMS 3.54N·s/m
Dimensions
- Nominal diameter 15″
- 380mm
- Overall diameter 393mm
- Baffle cutout diameter 354mm
- Overall depth 184mm
- Flange thickness 13mm
- Mounting depth 171mm
- Volume occupied by the driver (estimated) 4.3L
- Net weight 7.9kg
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