Eighteen Sound 15MB650
Subwoofer
15″ / 380 mm
Nominal diameter
40 Hz
Resonance
0.26
Q factor
98 dB
Sensitivity
± 4 mm
Linear excursion
600 W
Program Power
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 98.1
- dB
- Frequency response
- 50 - 4800
- Hz
- Resonance frequency (free air)
- fS
- 40.0
- Hz
- Mechanical quality factor
- QMS
- 3.95
- Electrical quality factor
- QES
- 0.27
- Total quality factor
- QTS
- 0.26
- Maximum linear excursion
- xmax
- 4.0
- mm
- Air volume displaced at xmax
- VD
- 360
- cm³
- Power handling
- P
- 400
- W
- Program power
- Pmax
- 600
- W
- Nominal impedance
- Z
- 8
- Ω
- DC resistance
- RE
- 5.5
- Ω
- Inductance (1kHz)
- LE
- 1.36
- mH
- VC Diameter
- 75
- mm
- Winding material
- Copper
- Force factor
- Bl
- 20.0
- N/A
- Motor constant
- Bl/√RE
- 8.53
- N/√W
- Material
- Ferrite
- Effective diameter
- 339
- mm
- Effective area
- SD
- 900
- cm²
- Moving mass
- MMS
- 77
- g
- Moving mass (without air load)
- MMD
- 58.7
- g
- Material
- Weather protected
- Stiffness
- KMS
- 4.85
- N/mm
- Compliance
- CMS
- 206
- µm/N
- Equivalent volume to the compliance
- VAS
- 210
- L
- Mechanical resistance
- RMS
- 4.9
- N·s/m
- Nominal diameter
- 15
- ″
- 380
- mm
- Overall diameter
- 387
- mm
- Baffle cutout diameter
- 353
- mm
- Overall depth
- 167
- mm
- Flange thickness
- 19
- mm
- Mounting depth
- 148
- mm
- Volume occupied by the driver (estimated)
- 4.2
- L
- Net weight
- 8.3
- kg