Eighteen Sound 21LW1400
Subwoofer
21″ / 533 mm
Nominal diameter
28 Hz
Resonance
0.24
Q factor
97 dB
Sensitivity
± 9.5 mm
Linear excursion
1600 W
Program Power
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- Amazon.com
- $$$
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 96.9
- dB
- Frequency response
- 24 - 2000
- Hz
- Resonance frequency (free air)
- fS
- 28.0
- Hz
- Mechanical quality factor
- QMS
- 9.32
- Electrical quality factor
- QES
- 0.24
- Total quality factor
- QTS
- 0.24
- Maximum linear excursion
- xmax
- 9.5
- mm
- Air volume displaced at xmax
- VD
- 1577
- cm³
- Power handling
- P
- 1400
- W
- Program power
- Pmax
- 1600
- W
- Nominal impedance
- Z
- 8
- Ω
- DC resistance
- RE
- 5.0
- Ω
- Inductance (1kHz)
- LE
- 2.85
- mH
- VC Diameter
- 100
- mm
- Winding material
- Copper
- Force factor
- Bl
- 33.5
- N/A
- Motor constant
- Bl/√RE
- 15.0
- N/√W
- Material
- Ferrite
- Effective diameter
- 460
- mm
- Effective area
- SD
- 1660
- cm²
- Moving mass
- MMS
- 296
- g
- Moving mass (without air load)
- MMD
- 248.5
- g
- Material
- Weather protected
- Stiffness
- KMS
- 9.17
- N/mm
- Compliance
- CMS
- 109
- µm/N
- Equivalent volume to the compliance
- VAS
- 385
- L
- Mechanical resistance
- RMS
- 5.59
- N·s/m
- Nominal diameter
- 21
- ″
- 533
- mm
- Overall diameter
- 545
- mm
- Baffle cutout diameter
- 492
- mm
- Overall depth
- 259
- mm
- Flange thickness
- 14
- mm
- Mounting depth
- 245
- mm
- Volume occupied by the driver (estimated)
- 11.0
- L
- Net weight
- 17.0
- kg
Available on (affiliate link)
Specifications
Thiele & Small parameters
Large signal parameters
Voice Coil
Magnet
Diaphragm
Suspensions
Dimensions
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Export this driver to a simulation software:
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
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