Eighteen Sound 15ND830
4Ω
8ΩSubwoofer
15″ / 380 mm
Nominal diameter
42 Hz
Resonance
0.34
Q factor
97 dB
Sensitivity
± 6.5 mm
Linear excursion
700 W
Program Power
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 96.7
- dB
- Frequency response
- 42 - 4500
- Hz
- Resonance frequency (free air)
- fS
- 42.0
- Hz
- Mechanical quality factor
- QMS
- 7.20
- Electrical quality factor
- QES
- 0.36
- Total quality factor
- QTS
- 0.34
- Maximum linear excursion
- xmax
- 6.5
- mm
- Air volume displaced at xmax
- VD
- 553
- cm³
- Power handling
- P
- 450
- W
- Program power
- Pmax
- 700
- W
- Nominal impedance
- Z
- 4
- Ω
- DC resistance
- RE
- 3.0
- Ω
- Inductance (1kHz)
- LE
- 0.62
- mH
- VC Diameter
- 75
- mm
- Winding material
- Aluminum
- Force factor
- Bl
- 14.0
- N/A
- Motor constant
- Bl/√RE
- 8.08
- N/√W
- Material
- Neodymium
- Effective diameter
- 329
- mm
- Effective area
- SD
- 850
- cm²
- Moving mass
- MMS
- 85
- g
- Moving mass (without air load)
- MMD
- 67.7
- g
- Material
- Weather protected
- Stiffness
- KMS
- 5.92
- N/mm
- Compliance
- CMS
- 169
- µm/N
- Equivalent volume to the compliance
- VAS
- 157
- L
- Mechanical resistance
- RMS
- 3.12
- N·s/m
- Nominal diameter
- 15
- ″
- 380
- mm
- Overall diameter
- 387
- mm
- Baffle cutout diameter
- 353
- mm
- Overall depth
- 177
- mm
- Flange thickness
- 11
- mm
- Mounting depth
- 166
- mm
- Volume occupied by the driver (estimated)
- 2.9
- L
- Net weight
- 4.6
- kg